I found a right angle air powered die grinder to be very handy to have. You can use the 2" sanding disks for smoothing the weld, trimming the alum. panels and general grinding of small items. You can also get some carbide burrs if you need to remove evem more mat'l. If you get into a bind you can also use it as a small right angle drill to drill those rivit holes in tight places. Think of it as a dremel tool on steroids.