Tradguy

Nogoodwithusernames im certainly not the guy to be asking, Frosty is. Ive used forges a lot but not built many. However im not sure it will light with only 1 psi. I light mine at around 8-10 psi but im feathering the gas upon lighting. Don’t just crank it on at that psi when u put a flame to it but it needs some pressure to run after the initial lighting. CHECK FOR LEAKS FIRST. You may have a leak you dont notice. It won’t run right if you do and it’s dangerous. I think the coupler is optional in fact I have a NC forge with nothing on the end and it runs fine.

Yes sir it’s dropping. I have a pyrometer on it. Frosty suggested i have too much back pressure as well as not enough or the right liner. It seems like its starving for air when it starts dropping. Im getting a lot of big orange flame coming out. It will maintain forging heat when i have the pressure lower but when i turn it up for welding it just won’t maintain good welding temps. I have welded but i have to do it before the drops. I ran it yesterday without taking stock in or out and same results.

Im hooked up to a 250 gal tank. I dont notice it diminishing. I keep an eye on my rugulator for frost. Haven’t had any problems with that.

Frosty, im ready to order some refractory. Ive read some recommendations here and im thinking 2” kaelwool with kastolite refractory coated with itc 100. Ive also heard some talk about alumina bubble on the floor. Thoughts or changes? I wanna do this right this time. I experimented with opening the back end of forge but got the same results. Temp peaked then started falling. Maybe I didn’t have it open enough and maybe my liner isn’t helping. I do have my kaelwool liner coated with rigidizer. Thanks for the help!

Thank you much! I will make some changes and get a pic of the jets. I didn’t think about back pressure. I was trying to keep heat in but that makes sense. i moved the burners closer together as I thought that was part of my problem. I have a hole to move them back to 5 1/2” apart. i will be adding refractory!

Frosty help please! I built a forge by your plans (i think) but im having a hard time getting good welding temps. It seems to peak in temp then starts dropping. I have a pyrometer on it. I feel like its starving for air after it peaks. Ive trimmed the .035 tips 3 times. I have 3/4 tubes 6 in long with a coupler on the flame end. The only thing i think i did different was used 1x1 t and reduced it to get to the 3/4 My firebox is 8x8 , 18 in long with about 1 in kaelwool lining. I blocked off about 4 in of the length for normal work so im probably heating about 14 in. What am i doing wrong? Thank you in advance.