grim
+1y
I agree, both 18 or 20 are fine. But on the "works best" part - just take your time with welding/grinding, make sure your cooling it as soon as it feels hot to touch... Even after your done welding you can put uneeded warping in your doors when your grinding your welds smooth if you let it get hot - Watch that welding and friction heat. I tape an airchuck to my welding tip so I can just tack/cool until its all filled in. Then I grind like I weld, a little spot at a time and cool. Have fun man.