resurrected! for those that are interested in the technique, here is mine.
i just cut down my first NX05 optic.
i used my dremel and a cut-off wheel. worked very well, but was tricky because it is hard to hold the optic while cutting. it did not turn out perfect (2 spots near the edges are lower than the center--the dremel needs careful control), but the beam is still pretty nice, especially with a high dome. my next one will surely turn out much better.
after the initial cut, i followed with increasingly smooth grits.
i would think that a belt sander and a good pair of leather gloves would do a very nice job.
this is for an infinity luxeon mod. i will be placing a MMlite in it. testing is being done with a BB400, and it is still remarkably bright.
i decided to wait until i can afford an ARC 4+, so the infinity mod is to prevent withdrawal!
Bob