More cutting of the square holes. I finished cutting all 4 sides of each of the 4 rectangular holes leaving between 1/16" and 1/32" from the actual scribe line. I then used Paul Dye's recommendation on VAF.com of clamping a straight piece of steel along the scribe line and use the dremel rotary file to remove the remaining material. Still clamped I used the dremel sanding drum and then finally sandpaper. This technique works great and leaves a very smooth, straight edge. I'm about 1/3rd of the way through this trimming process.
4 big holes - the panel got alot lighter.
Here you can see my steel bar clamped along one of the edges for trimming to final size
Here is the rotary cutter in action. The steel keeps you from 'accidents'....
