Hi

Look for diamond engraving bits - I get these from RS Components (in the
UK).
For smaller diameter bits I have sometimes used dental drill bits (or
burs). Have a look at Diama :
http://www.diamadental.co.uk/
I have only ever tried the spherical tipped burs but other shapes may
also work. You may have to contact them for the sizes - there is some
correlation with the code number but I can't recall what.

Gareth

g.balsubra manian wrote:

>Hi everybody.,
>
>I am looking for drill bits for drilling glass. If
>anyone have idea of suppliers providing drill bits in
>the range of 500-700 micrometer (0.5mm-0.7 mm), pls
>Inform me.
>
>