Ready for gapping the rings. (Hopefully next weekend). Always too cheap to buy the right tool for the job, I put my angle drill in bondage to make my own ring grinder.
The nylon rings that are screwed to the base, hold the ring square to the grinding wheel and the high-end lamp helps me make sure it is. I also bought a 6 x's magnifying glass that I'll use to make 100% sure the ends are ground square.
Currently the top rings are gapped 0.012 and the 2nd rings are 0.014. I plan to open them up another 0.010.