Re: ATM 1/4" thick too thin for 4.5" mirror?

[Barrett Richardson <rabtter@sparky.state.ky.us>]

On Wed, 5 Apr 2000, Jim Fitch wrote:

> 
> How did you get a clean circle? I've not found that to be as easy as you
> make it sound.
> 
> Jim Fitch
> Amarillo Tx

Actually it's been a hideous amount of work. I found a piece of broken
glass that the circle of a no longer useful CD (slightly larger than 4.5")
would fit in inside of the broken edges. I used a scoring tool to score
lines tangent to the edges of the CD, lined the score up on a board,
and whacked it with a hammer. I've ground the high spots down with
a sharpening stone (actually I'm about 80% done with this). The breaking
was easy, and the breaks were clean, but grinding the high spots down
tedious.

I've never ground a mirror before and I've promised myself I could
splurge for a some decent blank if I have the "stay with it" to make
one out of scrap.

-

Barrett