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Found 5 results

  1. Ladies and gents - I am building a gas forge this winter. Planning to use Michael Porter's basic propane cylinder design. Because it is already piped to my property, I would like to use natural gas. This would eliminate the need for bottles, and for keeping them changed. Is it possible to use natural gas instead of propane with a simple, naturally aspirated forge? Are there any cons to doing so? Do you know of any guides or FAQs about doing so? Any advice would be greatly appreciated.
  2. I built a torch who works with natural gas and propane. Modernization is quick, simply to change nozzles. To take full advantage of "The Monster Torch" I designed and built a new furnace. This is a video of the work of the burner with propane. http://youtu.be/0zriNb1MUJs Here are the pictures you can see the steps of build and the principle of operation of the furnace. Mix of natural gas and atmospheric hot air accelerates to speed of burning using the compressed hot air. The first test run with natural gas. The furnace is almost cold, work with a minimum power of. After 40 minutes I put in forge the crucible and melted brass. Melted in a few minutes. The furnace is working on half power. In the movie can hear as roar of the torch with propane. Working with natural gas is quiet.
  3. Greetings Folks! I'm still a little new around here, but after tons of reading, this seems like the place to be! And for that I say thank you! I've been doing a little casting work with a waste oil burner furnace I built a couple of years ago. However, I've grown tired of sticking long rods down into the furnace and getting burnt in the process when I need to bend metal.... So it's time to build a forge. I'm using a shortened portable air tank lined with Kaowool and coated with Mizzou and it MUST be fueled by natural gas. I'm in a residential area so of course the NG pressure will be low. I've got the ribbon burner built from Mizzou and have been working on a 2inch mixing pipe for the forced air and gas feed. At the moment, I'm introducing the natural gas about 20 inches from the burner to allow for a good mix. (I think) I already have the John Emmerling pdf and the Wayne Cohen pdf as well. (big help) I'm surprised I haven't found much here on what I'm doing. I've searched and searched but all I find are threads without endings and threads with missing photos. :-( I'm kinda looking for some ideas on the fuel nozzle. Is one even necessary? My main gas supply is 1/2" black pipe, but I was going to try just 1/4" for starters and see if that's enough when I force air at it. I haven't nailed down a blower yet as I have several laying around to choose from. Some are squirrel cage fan designs and others are fan blade based. SO I guess I've got some experimenting to do on that one. WC suggestions would be helpful here. Anyhow, here's where I'm at for now, been busy with other things, so I'm just plugging away on this thing. Jason This is not how to bend metal. Ribbon burner setup Success!
  4. I attended a one day blacksmithing course a while back and got enthused enough to build a natural gas powered forge over a couple of weeks. We live one a small inner city block about 1 mile in a straight line from city centre so I have a few limitations, like noise and space but I do have a compact metal/wood shop with a fume hood that I can use the forge in. Internal dimensions of the opens space are 8" in diameter x 14" long Doorway uses a 6.5 lb lead counterweight that balances the silica firebricks. The other frame in front of the doorway is an removable air curtin. The frame also can hold a piece of pyrex glass from an old door oven so one can watch what is going on with the doorway up without getting cooked. That frame is on a hinge and can be rotated right out of the way as required. The air supply is a variable speed 1800W vacuum cleaner that runs at about 1/3rd of full power. I got it up to 1200ºC before I melted the thermocouple. It uses 2 cubic metres or 3 lbs of gas an hour. So far it runs off the NG bayonet on our back veranda but this has me excited enough to extend the gas line to the workshop.
  5. Hi All, I have a question about my new shop. My original plan was to have 220v 20amp service through the local power company. I began the paper work in March and so far I have been told that I will need to buy the power company a new transformer that would cost no more than $10,000... Also, there is the problem of compressed gas for my forge in an insured structure. I am contemplating using natural gas to fire my gas forge as well as run generator. I know that it won't save me all that much money, but it will solve several problems. The question that I cannot answer is, can natural gas fire a forge to adequate welding temperatures? If not the whole point is kinda moot. Does anyone know (1) if it is possible, and (2) what changes I need to make to the forge to succeed? Thanks for any help! Lar
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