[ATM] time to switch tile tool +

[Norm Prince]

Right on Horace,

That 16" f/5 of yours is gonna be something else...

Man it sure is great your doing the same parts of the process i am on my 12" 
project...(I only hope i keep pace with you)  It's good to hear the 
questions your asking and the advice folk give.  I'm fixin' to make a tile 
tool tonight after I work the last .25" of flat off the edge.  The sag on my 
blank being .14ish"...of a target .15 ish".

I have a periferral question about tile tools though...I'm going to be 
casting it in plaster of paris...because i have some laying around.  So the 
question is what do yall seasoned folk like to seal your plaster tools with? 
I was thinking maybe laquer???...or shilac?...and should i hog the plaster 
out of the channels between the tiles a little bit?

As always any thoughts would be greatly appreciated.

-norm-
Georgia, USA (land of increasingly bad seeing)



----- Original Message ----- 
From: "horace r davis" <hrd9 at juno.com>
To: <atm at atmlist.net>
Sent: Friday, February 02, 2007 18:19 PM
Subject: [ATM] time to switch tile tool


> On my 16" mirror I have reached .195 depth target .200 have been working
> with # 80 grit past 3 hr. Have fixed the flat edge, at what time do I
> switch to tile tool with #120 grit. My tiles are 2 inch hex tiles spacing
> in mat is only 3/16 inch between titles. Will this work or do I need to
> brake them apart. Horace 30 hr grinding I have discovered that I was not
> using enough pressure on my tool. started applying about 25 lb with the
> #80 grit and it worked grate.
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