Re: [ATM] Edging a Blank

[Gary Fuchs <gfphoto1@earthlink.net>]

Hello,

I'm a beginner...and probably haven't followed this thread as carefully as I should have, and thought this was referring to beveling...anyway:

Is there a reason, other than aesthetic, to smooth the edge with 25 micron or beyond?

How would the Dremel tool be used?

Thank you,

Gary Fuchs



> Quoting Michael Lindner <mikell@optonline.net>:
> > Has anybody experience edging that they'd like to share?

Thanks for the suggestions, guys. BTW, almost everybody replied off-list! This 
is a discussion list, let's hear each others' ideas! Gotta hit that "Reply 
All" button!

In response to several replies...

The blank is 18" x 2" thick.

I initially used a diamond hone which I held against the side of the blank as 
it rotated (at about 25 RPM). That took off glass OK, but the jig I used to 
hold it wasn't very effective at applying pressure evenly.

I tried holding the diamond tool by hand. That was more even, but a pain (in 
the hands) to do.

Anyway, after all that, the edge was fairly uniform, but the diamond (260 
grit) left the edge very rough, and still slightly out of square.

My final attempt has been a jig to hold a band of tiles around the blank, into 
which i feed grit and water. This is making a nice even edge but is painfully 
slow (I did several hour with 25 micron before deciding the scratches weren't 
going away - I switched to 220 and have done about 2 hours with that and it's 
still not making much progress.

I don't want to use a diamond saw dry because I am working in my basements and 
I don't want to propel glass dust throughout my house where my wife and kids 
will breathe it in, even if I wear a mask.

I considered a dremel, or a "glass edging" tool on my drill press, but
none of 
those have a 2" cutter, so I'd have to make several passes at different 
heights and get them all to align. Doable, but I was hoping for a lower tech 
solution.

I also considered modifying a tub saw (for cutting tile). Anybody try that?

Clear skies.
-- 
Michael Lindner
http://www.starastronomy.org *** http://home.att.net/~mikel
http://www.atmsite.org *** http://www.atmlist.net

 



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