Question on drilling glass

[aka rotten]

Few weeks back asked about drilling bottles and ya,ll told me what kind of bits to get.Got some carbide tipped bits,[4 pak]and size I want is 5\16.Question is do I start with small bit in bottle or go for the money to begin with?I,ve not messed with drilling glass before so I,ll ask experts.Thanks.Paul

 

[va.grouseman]

I use diamond incrusted bits.---Slow speed so as not to punch through.---Plenty on E-bay.

http://www.ebay.com/sch/i.html?_odk...=diamond+drill+bits+glass&ghostText=&_sacat=0

 

[fnieto]

If your asking if you should pilot drill it and move up in size, I would say no. Drill it the size you need (once).

 

[rlitman]

I've had luck with the carbide spade tipped "glass" bits on ceramic tile, but not on glass.
Diamond is better.
Either way, keep it very wet and go very slow. No pilot hole.

 

[aka rotten]

Thanks gents,the carbide seemed to work fine,drilled 6 colored heavy wine bottles with no problems.Took it slow and sprayed with water.Wife will be happy.Paul