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My first attempt at a build. - Page 4
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LOLOLOL! Love how your plenum turned out! I hope to be starting mine this weekend or early next week. I'm itchin' to start a dang fire ;)
Yes it's a stick welder. We're running it hot so it's penetrating good. We're using a decent sized rod as well. I think the beveling should help as well.
Got a little more done today. Cut the FB door. Welded the seem all along the inside of the FB. It was only tack welded so I ran a bead all the way across. Then I put a better weld on the part that connects the FB to the CC and then hit it with the grinder.
This is the weld that connects s the FB to the CC. It may need a little touch up welds and grinding . I don't know if the paint will fill in those spots.
I honestly don't know what millescale is so I have no idea if there's millescale on it.
Two types of steel.
"Cold roll" This material has been rolled without heat and no mill scale. More expensive than hot roll because of the process it is also covered with a protective oil finish.
"Hot roll" this is rolled with heat as it is made it forms a temporary covering to protect it from rusting this covering is the mill scale. The covering is a temporary covering that should be blasted off before painting as most paint failures on fireboxes are due to leaving the scale and with the expansion and contraction the scale releases and it and the paint pop off.
For welding if your'e using 7018's the mill scale will cause excessive buckshot because it is detonating. I usually run my first pass with a 3/32" 6010 then clean up and cover with a 3/32" 7018.