A Hole In Glass Tile?

 
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Old 07-28-2017, 07:56 PM   #1
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A Hole In Glass Tile?


i am a media blaster by trade and have a really good customer who builds super high end detail based houses. i have done a few cool jobs and they came to me today with 5/16" thick glass tile (12"w x 8"h) that needed a hole in it for shower plumbing. they bought a coring drill to drill a 1 3/16" hole. hole drilled. cracked instantly
glass shop would not touch it. (lazy)
water jet guys got the hole cut and it snapped.
i tried lightly glass blasting both wet with a blast mat for a template. it too snapped. i blasted both sides and worked towards the middle. as soon as i broke through it split vertically ("ripples" run left to right not vertical).

it was a "wave" like ripple on the outside and we are thinking that there are pressures.
anyone have any tips? they dont want to redo the shower but it has to be perfect. "good enough" isnt in their job description.

any advice would be awesome. thanks

Last edited by superclean; 07-28-2017 at 08:02 PM.
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Old 07-28-2017, 08:08 PM   #2
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Re: A Hole In Glass Tile?


So you can break a few before you get it right?

Maybe gently grind it with a dremel. The glass has to be on a solid surface with some rubber to absorb the vibration.

Or, if you have a wet saw, try very gently grinding from the back side until you reveal enough of the hole. If you can hold it on a solid surface + rubber, maybe even better.

Or move the shower ell up or down to align with an edge, then grind tile edges to accommodate.

I hope you're getting paid for this.

Or drill a series of tiny holes around the hole perimeter, then score (glass cutter) across some of the holes, then tap out the pieces. (work on a solid surface + rubber)

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Old 07-28-2017, 09:39 PM   #3
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Re: A Hole In Glass Tile?


Put against a good backstop a shoot it with a 45 ACP ...Full metal jacket no hollow point...this should give you a 1/2 hole...Dremel grind from there

OR do like Mark says and move the shower arm down....or up if you prefer...Esteshion ring should cover any f-ups
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Last edited by Irishslave; 07-28-2017 at 09:43 PM.
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Old 07-28-2017, 10:23 PM   #4
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Re: A Hole In Glass Tile?


Sounds like the tile is tempered glass.
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Old 07-28-2017, 11:03 PM   #5
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Re: A Hole In Glass Tile?


Easy peezy, diamonds are your best friend;



Drilled without back up.

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Old 07-29-2017, 12:41 AM   #6
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Re: A Hole In Glass Tile?


Try it in pyrex
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Old 07-29-2017, 07:35 AM   #7
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Re: A Hole In Glass Tile?


Quote:
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Sounds like the tile is tempered glass.
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Try it in pyrex
Glass tiles are not tempered. If they were you could not cut them to install them.

The OP states the tiles are cracking, not shattering, the tiles he is trying to drill are not tempered.

If he has enough tiles I'd throw one in and oven at about 180º-200º F. Let it cool, place it in a water bath, then drill it.

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Old 07-29-2017, 08:27 AM   #8
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Re: A Hole In Glass Tile?


If heating the tile does not work to relieve the tension, try freezing.

Tom

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