Chris Green <
cl@isbd.net> wrote:
Thomas Prufer <prufer.public@mnet-online.de.invalid> wrote:
On Wed, 26 Feb 2025 21:05:35 +0000, John Rumm <see.my.signature@nowhere.null>
wrote:
or a spray of water from a pistol grip spray every so often while drilling.
The small diamond grit edged hole saws make a fairly easy job of it - >just need light pressure, let the abrasive do its thing...
Bit like:
https://www.amazon.co.uk/sourcing-Diamond-Drill-Ceramic-Porcelain/dp/B07MNQW5FX
I have used these on regular glass
<https://www.tilerite.co.uk/drills-holesaws/tile-glass-drills/tgd559/>
(Triangular bit of hard metal brazed into a holder) and I'd far prefer to use a
small hole saw.
I think a drill press would make it whole lot easier.
I don't think you will drill several holes in one piece of glass without the
glass being on some sort of backing. Easing through the last bit of glass was
difficult for me...
Thanks both, the specific drill (type) recommendations are really
useful.
I too wonder about the exit from the other side of the glass being the
point at which one is most likely to make cracks. Given that I'm
going to try this on laminated glass I wonder if it's worth drilling
from both sides and thus making the 'exit' into the plastic layer in
the middle.
It can be done! :-)
I bought these bits:-
https://www.amazon.co.uk/SabreCut-SCTBB10-Multi-Material-Ceramic-Porcelain/dp/B0BVKZ5N3R
I had a play today with a cracked window made of the laminated glass I
want to make holes in. It went pretty well, the first attempt was
nearly OK but made a crack as the drill exited. So I tried again and
drlled from the other side once the tip of the drill was poking
through and that worked perfectly. Excellent! :-)
What seems to be required:-
Fairly slow drill speed (slow speed of two-speed cordless is what I used)
Keep it cool with lots of water (keeps the dust at bay too)
Not too much pressure
Drill from the other side to finish
--
Chris Green
ยท
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