Hunted1

All of the nipples measured 6" overall with an ID of 3/4". On the burner that works, the distance from the mig tip to the start of the nipple in the T was 2 1/16". The other two measured 2 1/4" and 2 1/2". I did try an uncut mig tip, which obviously was way too long.

Anthony, I am using 1/4 NPT fittings for almost all the connections (ball valves, four-way) and 3/8 flares for the hoses. I have a 1/4 NPT to 1/8 NPT hex nipple threaded into the top of each T. Inside the 1/8 side, I drilled and tapped 1/4 28 and screwed in the mig tip. I used LP rated pipe dope on all of the connections and tested them for leaks (I had missed one). The nipple just barely pokes through the T. Let me know if I missed something. Thank you for questions! I forgot a few dimensions. The burners are 1" x 3/4" Ts with 6" nipples and the flares are 3/4" couplers

As a first step putting together a forge, I decided to build a Frosty T Burner. Actually, I decided to build three of them. I had a few issues during the build phase mostly because my drill press is small and I had a hard time getting bits in and out while keeping everything aligned. In test firing the burners, one of the three runs well. The other two have the same problem where they will not stay lit. I am running at 5 psi and testing one at a time. I have a 0-30 psi regulator hooked up to a 20 lb tank. I am using .035 mig tips that I have cut down. Everything seems pretty straight, but my eyes (and camera skills) aren't so great. I could get the two bad burners to hold a flame if I choked the air intake by 50%, but then the flame was blue and whispy. Also removing the flare and cutting the propane flow back gave just a small flame. Increasing the propane just blew it out. I tried long and short mig tips, but the results were always the same. I appreciate any feedback! Thanks! Here is the one that runs: Here are the ones that don't run properly: Here is my general testing setup:

Any thoughts on turning a 5 gal pail +into a gas forge? I was leaning towards a 20 gal propane tank build, but thought this might be simpler. Should I be concerned about the coating? Thanks!