Step 1: Plasma cutting the AR15s out
Step 2: Removing the slag and sharp edges
The edges are also ragged and sharp after cutting them out so I used some different types of files to smooth them out. I used several types of files because of all the different nooks I had to get in to.
I also took the bracket and cut off the tabs that the bolts for the old bumper went through. I wanted to see as little as the bracket as possible so I also cut out the center of the bracket.
Once every thing was filed and cut I prepared the surfaced that I would be welding by using the sandblaster to remove paint and mill scale from my parts.