FW: Alt print on Glass?
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- Subject: FW: Alt print on Glass?
- From: geoff chaplin <firstname.lastname@example.org>
- Date: Tue, 19 May 2009 07:30:32 +0100
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I$B!G(Bve used carborundum to grind telescope
mirrors. You can get a variety of grades and starting with the coarsest working
down to the finest you can get a perfectly flat (or evenly curved) surface.
However you only need to provide grip so one grade alone should do but no idea
whether the finest or the coarsest will be best for this application. You will
need a flat surface to put the glass on – and probably with a thin layer of
something which gives a little to absorb minor variations in the reverse of the
glass – and will need to make a tool to rub over the glass with the carb in
between For mirror grinding we use another piece of glass bonded to a piece of
wood with bitumen.
Not sure where to get carb now but Google
throws up a good list. Traditionally this task is performed in a freezing
garage mid winter $B!D!D(B Good luck.
UK mobile ($B1Q9q$N7HBSEEOC(B): +44(0) 7770 787069
Japan mobile ($BF|K\$N7HBSEEOC(B): +81(0) 90 6440 7037
Japan land line / fax ($BF|K\$NEEOC$H%U%!%/%9(B):
+81(0) 166 92 5855
Sent: 19 May 2009 05:43
Subject: Re: Alt print on Glass?
I have used carborundum
(fairly fine) to give a very nice matte finish to glass. If you mix a little
oil with it, or water, you can make a slurry that will do the trick. You
need something that provides a hard, flat surface to grind the glass with.
A flat, hard wooden block with a handle will do—or you can use another
piece of glass or metal. Just keep going over the surface evenly in
circular motions until you have the surface you want.
Another trick for cutting
holes in the corners to hang a piece of glass it to use an electric drill with
a short piece of copper tubing substituting as a drill bit. you cut a
couple of notches in the the business end of the copper tubing "bit"
to aid in the cutting action of the carborundum. Next you use clay to
make a little dam around the spot where you want to cut the hole. in the dam, put
some carborundum and oil and then start drilling away with gentle pressure.
Soon you have a nice round hole cut in the glass without it breaking.
This method can also be used to cut holes in other items that are made of
glass, such as bottles, etc., though I find just popping the cap off a bottle
of beer is a lot easier and less messy method to get to the contents.