Turned down edge?
Would someone please tell me if my turned down edge needs fixing or
if I can go onto figuring?
The picture is the 14th picture in the Photos area
and is called "Ronchi prefigure 2". (can't miss it)
Also, I have been doing the polishing on a Tom Waineo type of machine
using a 6" tool (on my 8" blank). I believe the turned down edge
came from having the arm come out further than it should have. I did
this because the edge wasn't getting polished fast enough. Would I
correct this by polishing the center down, i.e. have the tool only go
over the edge a little bit?
Thanks a bunch!!
Could you try to get the mirror a little closer to the RoC, the
fewer lines you have the better, try to get it so there are only 5
lines or so, it will give a better understanding of what is really
with ronchi, the closer you get to RoC the fewer lines you will have,
and the fewer the lines,the more sensitive it is.
with that many lines showing one can not really say what is going on.