a #2 cutting tip for the ox/ace is supposed to cut through 1-2' material. I was using a #1 cutting tip and it cut but had a hard time going through I am picking up the #2 tip and a larger oxy tank to finish the job next friday. The little oxy tank I was using lasted about 15 min and cut 6' I will post pictures next week sometime. I am photo documenting the construction of the forge and going to make a how to web site or blueprint for the brake drum forge. I also got a 115 amp blower from centaur forge that ways 5 lbs that I am going to use on it with a speed control. I can't wait till it is done. I have the hammer, iron and forge now I just need something to hit it on also I have a line on 1 ton of anthrosite coal for free. The will follow me home soon. I am bad at spelling so I am not sure the name of the coal is spelled right hope you can figure it out :)