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Grinding Glass

Posted: Fri Oct 03, 2014 3:19 am
by Havi
Hi everybody,
I need to grind 3 m'm glass off a piece of mine.
It take AGES with regular tools, i.e. angle grinder. I am using 30 grit diamond disc - and it seems to work too slow. Very frustrating.

Do you think I could use, a more aggressive pad, like one being used for cement, for instance? They have 16 grit discs...

Then, I'll probably have to go over it with a finer tool - - - :?

Thanks in advance

ps, it can't be sandblasted

Havi

Re: Grinding Glass

Posted: Fri Oct 03, 2014 4:19 am
by The Hobbyist
The coarser the grit the greater the chipping will be around the perimeter. Even at 30 you should see quite a bit. 16 will be worse. The chipping can be very deep which in turn requires even more surface removal.

I would suggest a little finer grit like 60 or 80 and more rapid application. This is where power tools are very beneficial.

Jim "The Hobbyist"

Re: Grinding Glass

Posted: Fri Oct 03, 2014 10:21 am
by Bert Weiss
Yes, aggressive discs designed for materials like concrete or stone, can leave huge chips and gouges, that create many more problems than they solve. If I have 3mm to remove from the perimeter, I would take it to a waterjet company. This leaves a ground surface that is not too difficult to polish out.

Re: Grinding Glass

Posted: Fri Oct 03, 2014 5:18 pm
by Havi
Thanks you both Jim and Bert, [G'mar Khatima Tova... BTW]

I think that sandblasting would have also done a pretty good job. Sandblasting is also more available here.
However, luckily enough, a friend who came to help me today, found a method of grinding holding the grinder a bit on diagonal - and did the job within 2 hours. -
a real MIRACLE!
I am so happy now. Totally a different person

Thanks for your responses

Havi