GongYi 6KG Propane Melting Furnace Kit Made of Stainless Steel Includes Crucible and Tongs Foundry Kiln for Smelting Scrap Metal Recycle Gold Copper Aluminum Casting GMF600
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Size: 6 kg
Features
- Humans have been working on metal since the dawn of recorded history, it was handmade but it is very attractive. We love it, and we've focused on metal smelting and forging for years. You are ready to begin your metalworking but arent sure where to start? Dont worry, as GONGYI team, weve got you covered.
- Heating fast, melt aluminum in about 10 mins.
- This Propane Smelting Furnace works efficiently with melting Glass, Copper, Aluminum, Gold, Silver and other Scrap Metal Recycle (Can't melt steel). Suitable for DIY, jewelry processing applications.
- Professional design for USA standard Propane Tank, includes gas hose and regulator(Input QCC type, Output 5/8") which can hook up to American standard Propane Tank directly.
- WHAT YOU GET: Furnace, burner, gas hose with regulator, 6KG crucible, ONE pc fire pad, tongs, PTFE tape, manual.
Product Dimensions: 8 x 8 x 12 inches
Item model number: PQFF-101-V1
Item Weight: 14.43 pounds
Manufacturer: GONGYI
Country of Origin: China
Date First Available: August 26, 2020
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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: 6 kg
Fist day, so far it's been great for the price all parts arrived super easy set up, and gets hot fast!
Reviewed in the United States on November 27, 2023 by Marty Mcfly Marty Mcfly
Size: 6kg with pouring tongs
11/18/2023: The Pros: Furnace itself seemed very well built, solid. I haven't tried it yet, as it's raining outside--liquid metal and rain are not a good combination. The tongs seem relatively strong, however the securing fasteners didn't work, see cons below. The carrying case appears to very good quality, as do the gloves. Overall I'm quite impressed. I hope that all the parts and pieces work as good as they appear. The Cons: The crucible appears to have a manufacturer's defect/flaw in the side. I am hoping that this doesn't break when it's full of hot liquid metal. The tongs are two-piece, the handles thread on to the tongs. There are hex set screws that are supposed to lock the handles onto the tongs. One had a missing screw, the other immediately stripped upon tightening. I was extra careful, as they are made of aluminum--but the thickness of the handles is quite thin, and it immediately stripped out. I don't think this will matter though, as the main threads on the handles appear to be enough to maintain a connection to the tongs. The safety glasses were packaged under the furnace, and arrived broken. Even if they had not been--I wouldn't use them, as they appeared very cheap/flimsy. I suggest buying yourself a good set of safety glasses if you don't already have one. Twice in my life I'm sure that they have saved my vision. I will update this review once it stops raining and it's dry outside.
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Reviewed in the United States on November 18, 2023 by U.L. U.L.
Size: 6 kg
Easy to set up and use. I did preheat the crucible for an hour in an oven prior to use in the furnace, and it works great. The valve is a bit counter intuitive, clockwise is on. I did put the lid in my blast cabinet before use to remove the "I love gooold" slogan which seems a bit cheesy. Otherwise well made and heats fast. Melted a small amount of brass in about 5 minutes. Overall a great little addition to the workshop. Don't forget to wear your safety equipment when using.
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Reviewed in the United States on January 25, 2023 by Tim
Size: 6 kg
These guys are awesome! They respond quickly and take care of problems without any hassles. I bought their lowest priced foundry to test them out because of the bad reviews. But after using this stuff and their response to normal problems (so normal I won't bore you with details) I highly recommend them. If your foundry isn't melting aluminum, copper or steal, then you are doing something wrong. Start with your air/fuel mixture. You probably don't have enough air. I've been doing metalwork for 40 years and this foundry is just about the best backyard foundry I've ever used. The only downside is that the ceramic/fiber blanket is exposed and vulnerable, however, to cover it with refractory would understandably skyrocket the price, of course. But all of the basic elements are here and of damn fine quality. So I don't mind paying a lower price and have to do a minor upgrade like that myself. I do wish the chamber was just a little bigger to accommodate such an upgrade. But my forge with a chamber 1.5 times as big takes twice as long to heat up, even with 2 venturies. So smaller chamber equals faster heat and lower fuel consumption. I'm good with that. So to sum it up; Awesome product, awesome price, fantastic customer support, awesome value. If you have ever wanted a backyard foundry buy one from these guys. My only regret is that they were out of stock on the 12kg foundry. I should've waited and spent the extra money. So get off of the fence, look at their products and start having fun. P. S. No, they did not pay me for this review, I'm just super happy with the product and extremely supper happy with the customer service. I'm going back to buy their gloves and extra crucibles and ingot molds, these are both consumables so buy extras or expect to eventually replace them.
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Reviewed in the United States on December 29, 2021 by George Parker