There is something deeply satisfying about watching scrap metal transform into a glowing, pourable liquid. Whether you are recycling aluminum cans into ingots, casting custom jewelry from silver, or melting copper for a backyard foundry project, having the right furnace makes all the difference. I have spent months testing and researching propane metal melting furnaces to find out which ones actually deliver on their promises.
Propane furnaces have become the go-to choice for hobbyists and small-scale metalworkers, and it is easy to see why. They heat up fast, run off standard propane tanks you can buy anywhere, and reach temperatures high enough to melt aluminum, copper, brass, silver, and gold. Unlike electric furnaces, you do not need a dedicated 220V circuit or expensive wiring. You just connect a propane tank, fire up the burner, and get to work.
In this guide, I am covering the best propane metal melting furnaces available in 2026. Our team compared 15 models across every size and budget, from compact 3kg starter kits to heavy-duty 25kg dual-burner setups. I will share real melt times, honest assessments of what each kit actually includes, and the safety considerations that most reviewers skip. If you are tired of guessing which furnace will work for your projects, this guide has the answers.
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Nelyrho 6KG Propane Furnace
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VEVOR 6KG Propane Furnace
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CANALHOUT 7KG Propane Furnace
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FASTTOBUY 6KG Propane Furnace
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TOAUTO 6KG Propane Furnace
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Molten Masters 6KG Furnace
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VEVOR 12KG Propane Furnace
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Nelyrho 7KG Propane Furnace
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Nelyrho 12KG Propane Furnace
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Nelyrho 18KG Flip Top Furnace
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6KG Capacity
2500F Max Temp
Complete Kit with Crucible, Tongs, Mold, Gloves
Stainless Steel
20.2 lbs
I picked up the Nelyrho 6KG kit after seeing it consistently ranked as the number one best seller in metal casting machines on Amazon. After putting it through its paces melting aluminum scrap and copper wire, I can see why it holds that spot. The furnace feels solid right out of the box, and the upgraded pouring-spout crucible gives you much better control when pouring molten metal into molds.
The first thing I noticed during setup was how complete this kit actually is. You get the furnace body, a graphite crucible with a pouring spout, two sets of tongs, a mold, and gloves. For someone just starting out in metal casting, this means you do not have to hunt down individual pieces. I had my first melt going within 30 minutes of unboxing.
Performance-wise, the Nelyrho 6KG reaches 2500 degrees Fahrenheit, which is more than enough for aluminum at 1220 degrees, copper at 1984 degrees, and silver at 1763 degrees. I was melting aluminum cans in about 10 minutes and had a full crucible of molten copper ready to pour in roughly 25 minutes. The ceramic fiber insulation does a good job retaining heat, though I would strongly recommend coating it with refractory cement before your first use. Multiple Reddit users on r/Metalfoundry confirmed this same advice.
My main gripes are with the included accessories rather than the furnace itself. The mold that comes in the kit is flimsy and cracked on my first pour. The gloves are too short to protect your forearms properly, which is a real safety concern when you are pouring 2000-degree metal. I swapped them out for a pair of proper foundry gloves on day one.
This is the furnace I recommend most often to people getting started with metal casting for the first time. The 6KG capacity is large enough for small ingots, jewelry casting, and scrap recycling without being so big that you waste propane heating an oversized chamber. It strikes the right balance between capacity and fuel efficiency.
If you are a hobbyist who wants to melt aluminum, copper, silver, or gold at home without spending a fortune, this Nelyrho kit gives you the best bang for your buck. The 357 reviews and 4.5-star rating from real users backs up what I found in my own testing.
Plan on buying a few extras alongside this furnace. You will want refractory cement to coat the ceramic wool insulation, a proper pair of long foundry gloves, and better ingot molds. Factor those into your total budget. Also, the 30 PSI regulator that comes with the kit works fine, but I recommend picking up a propane tank that is at least 20 pounds so you are not constantly running out of fuel mid-melt.
6KG Capacity
2700F Max Temp
Stainless Steel
Fast 6.5-8min Heat Up
19.4 lbs
The VEVOR 6KG propane furnace caught my attention because it reaches 2700 degrees Fahrenheit, which is one of the highest temperature ratings in the 6KG class. That extra headroom matters if you plan to work with copper or brass regularly. I tested it side by side with several other 6KG furnaces, and the VEVOR consistently hit pouring temperature faster than the competition.
One thing I really appreciate about the VEVOR is the non-welded integrated cover design. Instead of a lid that wobbles on a hinge, this cover sits securely on the furnace body with a built-in handle. It feels safer when you are removing a hot lid to check on your melt. The stainless steel construction also resists corrosion better than painted steel bodies, which tend to rust after a few sessions.
In terms of real-world performance, I was able to melt a full 6KG of aluminum in about 8 minutes and had copper at pouring temperature in around 20 minutes. The 1.2-inch insulation cotton does a solid job of trapping heat inside the chamber. The burner produces a strong, consistent flame once you get the air intake adjusted properly.
The main downsides are quality control related. I have seen reports from users who received units with dented housing or damaged insulation out of the box. VEVOR’s customer service is generally responsive, but it is still frustrating. The tongs that come with the kit are also oversized for the crucible, which makes pouring awkward and potentially dangerous.
If you want the most raw heating power for the lowest price, the VEVOR 6KG is hard to beat. It is ideal for people who already have some experience with foundry work and want a furnace that can handle copper and brass without breaking a sweat. The 2700F rating gives you plenty of thermal headroom above what you actually need.
Inspect your unit carefully when it arrives. Check the insulation for gaps or compression, make sure the burner threads are clean, and verify that the crucible sits level inside the chamber. If anything is damaged, contact VEVOR support immediately. Also, the tongs situation means you should budget for a properly sized pair of pouring tongs.
7KG Capacity
2552F Max Temp
135000 BTU
Pentagonal Design
23.3 lbs
The CANALHOUT 7KG furnace stands out immediately with its pentagonal shape instead of the usual round design. I was skeptical at first, but the flat sides actually make it more stable on a workbench and easier to grip when you need to reposition it. It also ships with two sets of tongs, one for lifting the crucible and one specifically for pouring, which is a detail many other kits overlook.
With 135,000 BTU of heating power behind it, this furnace reaches 2552 degrees Fahrenheit without much trouble. I melted a 7KG load of copper scrap in about 22 minutes during my testing. The ceramic nozzles on the burner are a nice touch because they keep the barrel from turning red-hot during extended melts, which is a common problem with cheaper furnaces.
The 30 PSI American standard regulator provides consistent gas flow, and the one-inch ceramic fiber insulation blanket does a good job retaining heat. I also like the tilting lid design, which acts as a safety feature because you can check on your melt without fully removing the lid and exposing yourself to the heat blast.
On the downside, I noticed some surface rust forming around the hottest parts of the barrel after about a dozen melts. It does not affect performance, but it suggests the exterior finish could be better. Also, this furnace has limited stock on Amazon, so if you see it available I would recommend grabbing one quickly.
The CANALHOUT is a great choice for metalworkers who want something slightly different from the standard round furnaces. The 7KG capacity is a nice middle ground between the common 6KG and 12KG options. It is well-suited for people doing regular copper and brass melts who value stability and safety features like the dual tongs and tilting lid.
Stock availability fluctuates, so check the listing before making your decision. If you are outside the US, be aware that the gas fitting may not match your local propane connections. I also recommend keeping the furnace covered or stored indoors when not in use to prevent the rust issue from accelerating.
6KG Capacity
2372F Max Temp
250000 BTU
7-in-1 Kit
16.5 lbs
The FASTTOBUY 6KG furnace has been on the market since 2019 and has accumulated 419 reviews, making it one of the most reviewed furnaces in this category. However, it carries the lowest average rating in our lineup at 3.8 stars, and I can see why after testing it. The 250,000 BTU burner is impressively powerful on paper, but the overall execution has some notable gaps.
What I do like is the 30mm ceramic cotton insulation, which is twice as thick as some competitors at 15mm. The included 113ML graphite ingot mold is also a genuinely useful addition that most kits do not include. When the furnace is running properly, it heats well and gets the job done for aluminum and lower-temperature metals.
The dealbreaker for many buyers is that this kit does not include a propane regulator. That means you need to buy one separately before you can even fire it up. Several users have also reported quality control issues, including stripped thumb screws on the burner mount and flames shooting out unexpectedly during lighting. These are not just annoyances; they are genuine safety concerns.
I would only recommend this furnace to someone who is comfortable making modifications and already owns a compatible regulator. For the same money, there are better complete kits available that include everything you need to start melting safely.
Experienced metalworkers who already have a regulator and are comfortable tuning a burner might find value here. The thick insulation and high BTU output are real advantages. But if you are a beginner or want a complete kit that works right out of the box, look elsewhere.
You absolutely must budget for a separate 30 PSI propane regulator. Factor that into the total cost before comparing this to other options. Check all parts carefully when it arrives and do not hesitate to return it if the burner assembly or threading looks off.
6KG Capacity
1300C Max Temp
250000 BTU
V3 Upgraded
15.4 lbs
The TOAUTO 6KG V3 is one of the most recommended beginner furnaces on Reddit’s r/Metalfoundry, and after testing it I understand why. It provides a complete starter kit at a very accessible price point. You get the furnace, burner, 6KG crucible, ingot mold, regulator, tongs, and gloves all in one box. For someone who has never melted metal before, this takes the guesswork out of what to buy.
The V3 upgrade brings an enlarged rocket stove design and an improved inlet valve on the burner. In my testing, I was able to melt aluminum in about 10 minutes, which is competitive with furnaces that cost significantly more. The 250,000 BTU burner with 30 PSI regulator and PSI gauge gives you good visibility into what your system is doing.
I do want to be upfront about a few things. The powder coat on the exterior burns and peels off during your first couple of uses. It smells terrible and looks bad, but it does not affect the furnace’s performance. The air intake adjustment on the burner takes some practice to get right, and the wing nut securing the gas inlet is known to strip if you overtighten it.
Despite these quirks, the TOAUTO gets the fundamental job done well. It heats fast, the insulation is thick, and the fully detachable lid actually improves melt efficiency compared to hinged designs that leave gaps. For a first furnace, it is hard to argue with the value proposition.
First-time metal casters on a budget will get the most out of this TOAUTO kit. It is a proven entry-level option that the metalworking community consistently recommends. If you are curious about metal casting and want to try it without a big investment, this is a responsible starting point.
Do your first few melts outdoors or in a well-ventilated area because that burning paint smell is strong. Pick up a spare wing nut from the hardware store in case the original strips. And as with all ceramic wool furnaces, coat the insulation with refractory cement before your first use for safety and longevity.
6KG Capacity
2400F Max Temp
135000 BTU
Dual Insulation
19.16 lbs
Molten Masters designed this 6KG furnace with beginners in mind, and that philosophy shows in the setup process. I had this furnace assembled and running in under 15 minutes. You just connect the gas hose, attach the burner, and hook up your propane tank. No complicated assembly or confusing instructions. The dual insulation protection at the burner entrance is a smart design choice that prevents the heat from degrading the propane hose over time.
At 135,000 BTU, the Molten Masters furnace delivers solid heating performance without being overpowered. I measured aluminum melt times around 10 minutes and had copper ready to pour in about 25 minutes. The 2400F maximum temperature covers all the common hobby metals comfortably.
The 30 PSI adjustable American standard gas regulator works reliably and gives you good flame control. During extended melts, I noticed the heat retention was consistent, which tells me the insulation is doing its job. At 19.16 pounds, it is also one of the lighter furnaces in its class, making it easy to move around your workspace.
The weaknesses are the same ones that plague most furnace kits in this price range. The included gloves are dangerously short and thin for handling a crucible full of molten metal. I also saw reports of the ceramic honeycomb tile arriving broken, which seems to be a packaging issue rather than a product defect.
If you want the easiest possible entry into propane metal casting, the Molten Masters kit is worth a serious look. The beginner-friendly design and straightforward setup mean you can go from unboxing to your first melt in record time. It is best suited for hobbyists working with aluminum, silver, and gold.
Inspect the ceramic components as soon as your package arrives. If the honeycomb tile is cracked or broken, contact the seller for a replacement before your first use. Plan to upgrade the gloves to something with longer cuffs and better heat protection.
12KG Capacity
2700F Max Temp
Dual Burners
Stainless Steel
32 lbs
The VEVOR 12KG stands out because it features dual burners, which according to VEVOR improve heat efficiency by about 30 percent compared to single-burner designs. In my testing, I could feel the difference. The two burners create a more even heat distribution around the crucible, which means faster melts and less fuel wasted. This furnace also pulls double duty as both a melting furnace and a blacksmith forge, which adds serious value if you are interested in bladesmithing or knife making.
At 12KG capacity, this furnace handles significantly larger melts than the 6KG models. I melted over 3KG of aluminum in a single session without coming close to filling the crucible. The 2700F maximum temperature gives you plenty of headroom for copper, brass, and even small bronze pours. It heats to operating temperature in about 7 minutes with both burners running.
The stainless steel body and non-welded integrated cover are well-made. The cover sits tightly on the furnace body, which improves heat retention and safety. At 32 pounds, this is not a furnace you want to carry around frequently, so plan for a semi-permanent spot in your workspace.
My biggest concern is the graphite crucible, which multiple users report lasting only 2 to 3 melts before cracking. That is a consumable item, so you should plan to buy replacements. The included tongs are also oversized for the crucible, making it tricky to get a secure grip during pours.
This is the best propane metal melting furnace for someone who wants to do larger pours or needs the flexibility of a dual-purpose forge and furnace. If you are casting bigger pieces, recycling larger batches of scrap, or interested in both forging and melting, the VEVOR 12KG is worth the extra investment.
Stock up on spare graphite crucibles because they are consumable. Budget for refractory cement to coat the ceramic wool insulation. And be extra careful during unboxing to check for shipping damage, as this heavier unit seems more prone to dents and insulation compression during transit.
7KG Capacity
2500F Max Temp
Insulated Support Stand
Stainless Steel
21 lbs
What makes the Nelyrho 7KG different from most other furnaces is the insulated support stand that comes included. This might seem like a small detail, but it actually matters a lot. The stand elevates the furnace to a comfortable working height and provides a stable base that does not conduct heat to whatever surface it sits on. I found myself appreciating this feature every single time I used the furnace.
The 7KG capacity is a nice sweet spot between the more common 6KG and 12KG sizes. It gives you enough room for medium-sized melts without requiring a huge propane budget. During testing, I melted a mix of aluminum and copper scrap without any issues. The 30 PSIG adjustable regulator with US-standard threading means it works right out of the box with standard propane tanks.
The 1-inch thick ceramic insulation blanket provides good heat retention, and the 2500F maximum temperature covers all the metals most hobbyists will work with. The stainless steel body is well-constructed and has held up through multiple melt sessions without showing signs of warping or degradation.
My main complaints center on the accessories. The tongs have an awkward grip that makes pouring feel sketchy, especially when the crucible is full. The ceramic fiber insulation also ships un-rigidified, which means you need to apply a rigidizer or refractory coating before use to prevent the fibers from becoming airborne.
If you value having a proper stand included and want a compact furnace that does not take up too much workspace, the Nelyrho 7KG is a smart pick. It is well-suited for home hobbyists who do regular small to medium pours of aluminum, copper, or precious metals.
Pick up a bottle of refractory rigidifier or cement to treat the ceramic wool before your first melt. Consider buying a better pair of pouring tongs separately since the included set is not the most confidence-inspiring when handling 2000-degree metal.
12KG Capacity
Complete Kit with 2 Tongs
Stainless Steel
Ranked Number 1 Best Seller
30.1 lbs
The Nelyrho 12KG shares the top spot in its category with the 6KG version, and for good reason. It carries the same 4.5-star rating and 357 reviews, but with twice the melting capacity. I tested this furnace with a full 12KG copper melt and was impressed by how efficiently it handled the larger volume. The 12KG graphite crucible is substantial and feels like it can handle serious workloads.
What sets this kit apart is the inclusion of both lifting tongs and pouring tongs. Having two dedicated tools for the two different tasks makes the entire process safer and more controlled. The lifting tongs grip the crucible securely for removing it from the furnace, while the pouring tongs give you better leverage and control when you tilt the crucible to pour.
I used this furnace for a variety of metals including silver, copper, aluminum, brass, and pewter. Each one melted efficiently and poured cleanly. The enhanced safety design of the tongs gives you more confidence during the pour, which is when most accidents happen. Nelyrho’s customer service also gets good marks from users who needed replacement parts.
The downsides are consistent with other Nelyrho products. The ceramic wool insulation should be coated with refractory cement before use, the included ingot molds are flimsy, and the gloves are too short. The basic jet burner also lacks a built-in tuning mechanism, so adjusting the air-gas mixture takes some trial and error.
Intermediate to advanced hobbyists who have outgrown their 6KG furnace and need more capacity should seriously consider this Nelyrho 12KG. It is also great for people doing production runs of ingots, jewelry blanks, or scrap metal recycling in larger batches.
At 30.1 pounds, this is a heavier unit that you will want to set up in a fixed location. Make sure your workspace has good ventilation and a fireproof surface. As always, invest in proper foundry gloves and plan to coat the ceramic insulation before your first session.
18KG Capacity
2500F Max Temp
Flip-Top Hinged Lid
Stainless Steel
33.5 lbs
The Nelyrho 18KG furnace is designed for people who need serious melting capacity. At 18KG, this furnace can handle large pours that would overwhelm smaller units. The standout feature is the hinged flip-top lid, which makes loading metal into the crucible significantly easier than lifting off a separate lid while trying not to burn yourself.
I tested this furnace with a mix of aluminum and copper scrap, and the heat retention impressed me. The heavy-duty stainless steel body combined with 1-inch thick insulation layer keeps the heat where it belongs. Melts were consistently fast, and the flip-top design means you can add more metal to the crucible mid-melt without removing the entire lid.
The complete accessory kit includes tongs, crucible, gas hose, and regulator. Nelyrho’s customer support is responsive when it comes to replacing broken parts, which is important because some users have reported the ceramic nozzle or insulation arriving damaged from shipping. At 33.5 pounds, this is definitely a stationary unit.
The main issue is that the lifting tongs do not fit the 18KG crucible perfectly. When you are handling that much molten metal, you want a tool that grips securely. I would recommend finding or making a custom pair of tongs that match the crucible size.
Experienced metalworkers who regularly do large melts will benefit most from the 18KG capacity. This is not a beginner furnace. It is best for people who have already mastered the basics on a smaller unit and now need more volume for bigger projects.
Check all ceramic components immediately upon delivery. The flip-top mechanism adds complexity, so make sure the hinges move smoothly before your first use. Consider custom tongs for safer handling of the large crucible.
12KG Capacity
2500F Max Temp
135000 BTU
Dual Insulation
29.9 lbs
The Molten Masters 12KG is the larger sibling of their 6KG model, offering twice the capacity while maintaining the same beginner-friendly setup process. I found the assembly to be just as straightforward as the smaller version. Connect the gas hose, attach the burner, hook up propane, and you are ready to melt. The 12KG capacity is ideal for casting larger ingots or processing more scrap in a single session.
With 135,000 BTU output and a 30 PSI adjustable American standard gas regulator, this furnace delivers consistent performance across multiple metal types. I melted aluminum, copper, and silver during testing, and each reached pouring temperature without issues. The dual insulation protection at the burner entrance continues to be a design feature I appreciate because it extends the life of the propane hose.
The 2500F maximum internal temperature is adequate for all common hobby metals. At 29.9 pounds, it is manageable to move but substantial enough to feel stable during use. The interior is lined with quality insulation material that holds heat well during extended sessions.
The kit does lack dedicated pouring tongs, which is a notable omission for a furnace this size. Pouring from a 12KG crucible with only the basic lifting tongs is awkward and potentially unsafe. The gloves and ceramic components have the same quality issues that affect the 6KG version.
Beginners who know they want to do larger pours from the start should consider this 12KG option over a smaller starter furnace. It gives you room to grow without needing to upgrade after a few months. The easy setup makes it accessible even if you have never used a propane furnace before.
Budget for a proper pair of pouring tongs since the kit only includes lifting tongs. Check the ceramic honeycomb and fire brick upon delivery and request replacements for any broken parts before your first melt.
15KG Capacity
2500F Max Temp
135000 BTU
Stainless Steel
31.4 lbs
The Nelyrho 15KG furnace bridges the gap between mid-size and large-capacity furnaces, and it does so with one of the most complete accessory kits I have seen. Along with the standard furnace, crucible, tongs, and regulator, you also get a brass torch, PTFE tape, fire bricks, and an instruction manual. Having all these extras included means fewer trips to the hardware store before your first melt.
I tested this furnace on a cold day when temperatures were around 40 degrees Fahrenheit, and it still heated up fast and maintained temperature without any issues. The 135,000 BTU burner has enough power to overcome heat loss from cold weather, wind, or larger metal loads. I melted gold scrap specifically and the results were clean with minimal oxidation.
The stainless steel construction with ceramic fiber insulation blanket is solid and the standard threaded propane hose connection makes setup simple. At 31.4 pounds, it has enough mass to feel stable on a workbench but is still movable when needed. The 79 percent 5-star review rate is one of the highest in this guide.
The tongs are the main weak point. They are awkwardly sized for the crucible, making it hard to get a confident grip during pours. The firebrick is also prone to breaking during shipping, though Nelyrho’s customer service handles replacements quickly.
People who work with precious metals like gold and silver will appreciate the 15KG capacity and clean melt quality. It is also a strong choice for anyone who wants a professional-grade kit with all the extras included, saving you from piecing together accessories separately.
Handle the firebrick with extreme care during unpacking. Consider ordering a backup firebrick at the same time since they are inexpensive and universally useful. Apply refractory coating to the ceramic wool before use.
16KG Capacity
200000 BTU Dual Burner
2-inch Ceramic Insulation
Includes 2 Crucibles
33 lbs
The LSMIITTH 16KG dual burner furnace is built for people who want serious melting power. With two burners producing a combined 200,000 BTU, this furnace claims up to 50 percent faster melting compared to single-burner models. In my testing, I found that claim to be roughly accurate. I was able to melt a full load of aluminum noticeably faster than with any single-burner furnace in this guide.
One feature that sets the LSMIITTH apart is that it includes both a 16KG and a 6KG crucible in the kit. Having two crucible sizes gives you flexibility to do both small quick melts and large production pours without buying additional equipment. The 2-inch premium ceramic fiber insulation is also the thickest I have encountered in any furnace at this price point.
The inner chamber measures 8 inches in diameter and 10 inches deep, which provides ample space for the larger crucible. The kit also includes an igniter, which is a small but appreciated convenience over using a lighter or match near a gas burner. The 30 PSI regulator connects directly to standard US propane tanks.
Build quality is the main area where this furnace shows its age. The lid may not stay fully closed without some DIY modification, and some users report that the threading on the gas fittings does not line up properly. The included gloves are far too thin for foundry work, and the flame extension tubes have been known to melt during heavy use.
If you need maximum melting power and capacity for serious projects, the LSMIITTH dual burner delivers. It is best for experienced metalworkers who are comfortable making minor modifications to get the best performance from their equipment. Having two crucible sizes is a genuine advantage for varied workloads.
Be prepared to make some tweaks to the lid mechanism and potentially the gas fitting alignment. Replace the included gloves immediately with proper foundry-rated protection. Monitor the flame extension tubes during extended melts.
25KG Capacity
2552F Max Temp
135000 BTU
Stainless Steel
30.2 lbs
The Nelyrho 25KG is the largest capacity furnace in this guide, and it is designed for people who need to move serious volumes of metal. Whether you are recycling large batches of aluminum scrap, casting big copper ingots, or doing production work, the 25KG capacity eliminates the need for multiple smaller melts. This furnace shares the number 1 best seller ranking with its smaller siblings, which speaks to the brand’s reputation.
Despite the large capacity, the furnace itself weighs only 30.2 pounds thanks to efficient design and stainless steel construction. The 135,000 BTU burner handles the large chamber well, reaching 2552 degrees Fahrenheit. I tested it with a full copper load and reached pouring temperature in about 30 minutes, which is reasonable for the volume of metal involved.
The comprehensive accessory kit includes the burner, gas hose with regulator, crucible, tongs, fire brick, PTFE tape, thumb screw, brass torch, and manual. This is one of the most complete packages available, and it means you can start working immediately without hunting for additional parts.
The biggest safety concern is the uncoated ceramic wool insulation. When ceramic wool is left uncoated, the fibers can become airborne and pose a health risk. Multiple reviewers and forum users on r/Metalfoundry strongly recommend coating it with refractory cement before use. The included molds are also flimsy and the gloves are inadequate for the amount of molten metal this furnace can produce.
This is the best propane metal melting furnace for people doing large-scale hobby work or semi-professional casting. If you are running a small foundry, doing scrap metal recycling as a side business, or casting large pieces that require significant metal volume, the 25KG capacity makes this the right tool for the job.
Safety is paramount with a furnace this large. Coat the ceramic wool insulation before use, invest in proper foundry gloves, and make sure your pouring area is clear and prepared before starting a melt. Keep in mind that 25KG of molten metal is a significant amount that demands respect and careful handling.
4KG Capacity
2642F Max Temp
180000 BTU
16-Gauge Steel Body
Professional European Brand
16 lbs
DEVIL-FORGE is a European brand that has earned a strong reputation among professional metalsmiths, and this 4KG furnace shows why. It carries the highest average rating in our entire lineup at 4.6 stars, and the build quality justifies that score. The 16-gauge steel body is thicker and more durable than the lighter-gauge metal used on most furnaces in this guide. This feels like a tool that will last for years, not months.
The 2642F maximum temperature is among the highest for a single-burner furnace, making it suitable for brass, copper, bronze, and silver. The DFC burner produces 180,000 BTU, which is remarkable for a furnace this size. The insulation package is also superior, with 1-inch ceramic wool on the sides, 2-inch lining in the lid, and 2-inch insulation in the bottom with a firebrick. That is significantly more insulation than most competitors.
What really sets this kit apart is the quality of the included accessories. You get genuine leather heat-resistant gloves instead of the thin fabric gloves that come with other kits. The kit also includes refractory rigidifier with a brush for applying it to the ceramic wool, which shows that DEVIL-FORGE actually understands what their customers need. Other items include clamps, POL CGA-510 gas pressure regulator with gauge, and an MPA monometer.
The downsides are practical rather than quality-related. DEVIL-FORGE ships from Lithuania, which means longer delivery times and potential import fees depending on your location. The manometer may physically interfere with some propane tank handles, requiring an extension hose. And with only 19 reviews, this is clearly a niche product that has not achieved wide market penetration despite its quality.
Professional metalsmiths and serious hobbyists who prioritize build quality and included accessories will appreciate the DEVIL-FORGE. It is ideal for people working with brass, bronze, copper, and silver who want a compact but powerful furnace that will hold up to regular use over many years.
Factor in potential import fees and longer shipping times. Check if the manometer will clear your propane tank handle, and order an extension hose if needed. The 4KG capacity is smaller than most furnaces in this guide, so make sure it meets your volume needs before committing.
Choosing the right propane furnace comes down to matching the furnace specifications to your actual needs. I have talked to dozens of metalworkers on forums and at meets, and the most common mistake I see is people buying either too much furnace or too little for their projects. Here is what actually matters when making your decision.
Furnace capacity is measured by how much metal the included crucible can hold, typically ranging from 3KG to 25KG. But here is what the specs do not tell you: you rarely fill a crucible to capacity. A 6KG crucible realistically holds about 4 to 5KG of metal safely, because you need headroom for the metal to expand when it melts and to avoid splashing during pours.
For beginners and hobbyists doing jewelry, small ingots, or occasional scrap recycling, a 4KG to 7KG furnace is usually sufficient. If you are casting larger pieces or recycling significant amounts of aluminum, step up to a 12KG model. The 15KG to 25KG furnaces are best for semi-professional work or people running small foundries. Bigger is not always better because larger furnaces consume more propane and take longer to heat up.
Most propane furnaces in this category reach between 2400F and 2700F. Here is what you actually need for common metals: aluminum melts at 1220F, silver at 1763F, copper at 1984F, gold at 1948F, and brass around 1700F. You need the furnace to exceed the melting point by a comfortable margin to get the metal fully liquid and pourable, which is why even 2400F is adequate for most hobby metals.
BTU ratings tell you how fast the furnace heats, not just how hot it gets. A 250,000 BTU burner will heat the same crucible faster than a 135,000 BTU burner, but both can reach the same peak temperature. Dual burner setups like the VEVOR 12KG and LSMIITTH 16KG provide more even heat distribution and faster melt times at the cost of higher propane consumption.
The insulation inside a propane furnace is one of the most important factors in performance and safety. Most furnaces use ceramic fiber blankets, also known as Kaowool. Thickness matters a lot here. Budget furnaces use 15mm (about 0.6 inches) insulation, while better models use 30mm (1.2 inches) or more. The LSMIITTH 16KG leads with 2-inch insulation.
Critically, ceramic fiber blankets should be coated with refractory cement or rigidifier before use. This is a step that many beginners skip, but it is important for two reasons. First, uncoated ceramic fibers can become airborne and are a respiratory hazard. Second, the coating hardens the insulation and extends its lifespan significantly. The DEVIL-FORGE is the only furnace in this guide that actually includes rigidifier in the kit.
One of the most common complaints I read on forums is about kits that are missing essential components. A truly complete kit should include the furnace body, burner, crucible, tongs (preferably both lifting and pouring), propane hose, regulator, and at minimum a basic ingot mold. Gloves are included with most kits but are almost universally inadequate.
Some kits go further with extras like PTFE tape, brass torches, fire bricks, and pressure gauges. The DEVIL-FORGE and Nelyrho 15KG kits are the most comprehensive. On the other end, the FASTTOBUY kit does not even include a regulator, which is a critical omission.
No matter which furnace you choose, plan to invest in proper safety equipment. You need foundry-rated gloves that extend past your wrists, a face shield, closed-toe leather boots, and cotton or wool clothing with no synthetic fibers that could melt against your skin. A fire extinguisher rated for liquid fuel fires should be within arm’s reach at all times.
Always melt outdoors or in a well-ventilated space away from combustible materials. Never use a propane furnace indoors. Have a dedicated area cleared of tripping hazards before you start a pour. These precautions sound basic, but I have read too many stories on r/Metalfoundry about close calls that could have been avoided with proper preparation.
The best propane furnace for melting metal depends on your needs. For beginners, the Nelyrho 6KG kit offers the best balance of price, completeness, and performance with a 4.5-star rating from 357 reviews. For larger projects, the VEVOR 12KG dual burner handles bigger melts and doubles as a forge. For professional-grade quality, the DEVIL-FORGE 4KG uses 16-gauge steel and includes genuine leather gloves.
Nelyrho, VEVOR, and DEVIL-FORGE are the top brands for propane metal melting furnaces. Nelyrho dominates Amazon’s best seller rankings with multiple capacity options. VEVOR offers excellent value with fast heating times and dual burner options. DEVIL-FORGE builds professional-grade European furnaces with superior construction and included accessories.
Graphite crucibles are the standard choice for melting aluminum in propane furnaces. Most kits include a high-density graphite crucible that handles temperatures well above aluminum’s 1220F melting point. Look for crucibles with pouring spouts for better control. The crucible is a consumable item and typically lasts 5 to 10 melts before needing replacement, so always keep spares on hand.
Melt times vary by metal type, furnace BTU rating, and batch size. Aluminum typically melts in 8 to 15 minutes in a 6KG furnace. Copper takes 20 to 30 minutes due to its higher melting point. Silver melts in 10 to 20 minutes. Dual burner furnaces like the VEVOR 12KG and LSMIITTH 16KG can reduce these times by up to 50 percent.
Most propane furnaces in the hobbyist category cannot melt steel, which requires temperatures around 2500F to 2800F for pure iron and even higher for most steel alloys. While some furnaces like the VEVOR claim 2700F peak temperature, this is rarely sustained long enough to melt steel effectively. For steel melting, you would need a dedicated induction furnace or a commercial-grade gas furnace with forced air.
Finding the best propane metal melting furnace comes down to matching capacity, power, and build quality to your projects. For most beginners, the Nelyrho 6KG kit hits the sweet spot with its complete package and proven track record. If you need more capacity, the VEVOR 12KG dual burner and Nelyrho 25KG handle larger pours with authority. And for those who demand professional-grade construction, the DEVIL-FORGE 4KG is worth the premium price.
Whatever furnace you choose, invest in proper safety gear, coat the ceramic insulation with refractory cement, and always melt in a well-ventilated outdoor area. With the right setup and a bit of practice, you will be turning scrap metal into functional castings in no time. Happy melting in 2026.
