Today's build involved making the 'D' ring holder on the emitter. I cut and milled the clip with a Dremel and hand files out of aluminum. Next drilling a hole and a slot for the 'D' on the side, after that we, Tom and I drilled two open holes on the top the clip. Next came the holes in the emitter which we tapped for 6/32 bolts. One tip I used is that I put a tooth pick under the 'D' ring to help steady it. All and all a good prop day!