GongYi 6kg Gas Melting Furnace Kit Full Stainless Steel 304 for Metal Smelting Copper Aluminum Includes 6KG Crucible Tongs and Gloves
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Size: 6kg with Gloves
Features
- High Quality Material: Heavy Duty stainless steel 304 furnace body, No-rust, corrosion resistance, durable.
- Reach High Temperatures Quickly: Heavy Duty stainless steel 304 gas burner offers 135,000 BTU output, heat up to 2600F/1426C, it's very easy to melt kinds of metals, it can melt copper wire in 15 minutes.
- Pro Heat Insulation: Built-in ceramic fiber heat insulation Thickness up to 25mm, Excellent heat insulation effect.
- Safety: Come with 2 meters long gas hose and regulator, professional design for working with America standard Propane Tank directly, Easy to use.(It does not work with BBQ low pressure gas tank fitting)
- All In All: The complete set covers all of the basics, includes gloves, Furnace, burner, gas hose with regulator, 6KG crucible, fire pad, tongs, PTFE tape, manual.
Package Dimensions: 15 x 12 x 12 inches
Item model number: PQFF-101-V2
Item Weight: 15.72 pounds
Manufacturer: GONGYI
Country of Origin: China
Date First Available: June 22, 2021
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Top Amazon Reviews
Size: 6 kg
The media could not be loaded. I've seen a lot of reviews on several of these furnaces say it won't melt anything, or not hot enough for a proper our, etc. What is important to learn about this is that there are THREE things you have to adjust to get the proper flame. First off, turn your propane tank full on. You'd be surprised how easy it is to no do so. Second, the knob on the regulator adjusts your propane flow. Third, the sliding sleeve on the burner adjusts how much air gets mixed. The latter two of the above are the ones you need to get right. The more propane you have flowing, the hotter it gets, and the less propane you have flowing the lower the temp and if you Not enough air, or too much air, and your mix is out of balance resulting in too low or even too high of a temperature. If it sounds like it is popping or sputtering, and you still have propane, your mixture is out of balance. If you are running out of propane, no amount of mixture adjustment will help and it will keep happening. You can extend your melt time enough to finish a melt if it's pretty close by constantly adjusting the mix until you run out completely, though that was a pain. Next time I'm just switching out tanks and heating it back up. My crucibles get red hot (lit up a small area of the yard at night with just the crucible after a burn in of a new one) and are more than hot enough to melt aluminium and copper. I've had many successful melts and pours of aluminum, and one of copper. My first copper pour was bad because I hadn't thoroughly wiped down the new ingot mold and didn't preheat it enough, plus took a long time to pour the copper. 100% my error. I don't get a lot of copper, so I don't get a lot of practice with it, but working on that. We're planning on using the copper I do have, buying some tin, and casting a bronze sword. Not even worried about getting it hot enough for it as it gets enough for aluminum to flow almost like water. To address other reviews: The white ceramic plate does NOT go in the crucible. It is meant to place your crucible on when you take it out. Tempering and preparation of your crucibles, molds, and ceramic plate are CRITICAL. Look up how to do this. I put mine in my oven at 300°F for an hour to drive out moisture. With new ones I then turn it up to 500°F to finish curing it. New crucibles go into the furnace still hot from the oven and then heated slowly to red hot EMPTY. I then leave it in the furnace overnight to very slowly cool down. Its now ready for any melting. Molds I place on the lid near, but not covering, the vent hole to heat up to avoid thermal shock. If it's been awhile (months, like over winter) since I used a crucible or mold I'll put them in the oven for an hour at 300°F to dry them out. Some of the reviews make it obvious the crucible was not prepped and there was some rapidly expanding moisture that cracked or blew out part of the crucible. I have bought four crucibles and only lost one because I tried to do a slag melt and everything crystallized in the crucible. Broke the crucible trying to chisel it out, so competely my fault. The tongs are sufficient for pulling out the crucible and pouring, but there are better ones you can get separately. You need a slag scoop/spoon and a stainless steel 20" commercial one available here on Amazon works just fine. A slotted one was a bad idea, btw. Oh, and refractory bricks are a good investment to protect whatever surface you are working on. Regular bricks and pavers can work, but are more likely to have moisture in them which can cause them to crack or explode if they get too hot. Refractory bricks (like for wood stoves) are more porous and release any moisture more readily, and insulate better. I use a single layer on top of a sheet of plywood in my yard and the plywood is unscathed. Pictures are of aluminum ingots from a 5kg Gongyi mold, with banana for scale (for fun) on one side and a dollar bill for scale on the smooth side. Copper ingots are from 1kg molds. Video is from my copper melt. Tips on terms and concepts to lookup to aid you in your melting adventures: Fuel/air mixture (stoichiometry) Slag Dross Thermal shock Preheating molds (to prevent thermal shock) Crucible tempering Good luck and have fun melting!
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Reviewed in the United States on April 16, 2023 by Echo November Echo November
Size: 3kg
Was skeptical this would work. Stripped silver from old xrays and was needing to melt it down. This thing works great! Does not use a lot of propane to heat the crucible to red hot and it will easily keep it there. Came with nice gloves and tongs that can withstand the intense heat.
Reviewed in the United States on September 4, 2023 by luke cooper luke cooper
Size: 6 kg
Good little furnace. Used it to melt down aluminum and copper.
Reviewed in the United States on August 26, 2023 by Micah Olson
This is my first time smelting copper this furnace works great!
Reviewed in the United States on September 2, 2023 by Amazon Customer
Size: Mini
It does exactly what it was meant to do
Reviewed in the United States on September 4, 2023 by TsJessicaPark
Size: 3kg
Great for the price
Reviewed in the United States on September 5, 2023 by Tommy Russell
Size: 6 kg
This works great for melting copper and anything with a lower melting point then.
Reviewed in the United States on August 16, 2023 by Shawn
Size: 6kg with Gloves
This is a very nice package. We'll worth it.
Reviewed in the United States on August 20, 2023 by Amazon Customer