Originally Posted by Rob Babcock
Last nite I ordered some 3M Micro abrasive sheets
from Lee Valley. I got the PSA type in 15µ & 5µ plus a couple sheets of non-PSA 0.5µ Chromium Oxide (they don't have it in PSA anymore). My plan is to experiment with them as polish tapes for my Apex. Wish the 0.5µ was PSA but I'll find a way to mount it.
Rob - I thought I had .5 PSA but it's not, it's .3 and I got it here
. For .5 on the Apex get some glass blanks from Ben Dale, attach a 6000 grit tape and apply liquid CrO. Or, go to the pharmacy and pick up some 3M NexCare Gentle Paper Tape in the 1" width size. I've started to play around with other versions of 1" tape as well.
Edit - Diamond pastes in a variety of grits down to .1 micron can be had here
. .1 Micron = 0.000003937007874015748 inch, difficult to comprehend but anything you polish will show all your pimples in the reflection. LOL