Homebrew PCBs

Yes, I too have noticed the same thing with drill bits, but as long 
as they make a decent hole, they are still sharp enough to cut ;-)

Glass is a bear to cut, no doubt.  I have only had moderate success 
with cutting it using tin snips.  Perhaps this year I can finally 
aford to get something appropriate like a shear or similar.  In the 
mean time, I will keep using that cabide tipped saw blade until it 
starts to shred as opposed to cut.  






--- In Homebrew_PCBs@yahoogroups.com, "Stefan Trethan" 
<stefan_trethan@...> wrote:
>
> On Mon, 22 Jan 2007 12:32:28 +0100, lcdpublishing  
> <lcdpublishing@...> wrote:
> 
> > It too (Carbide tipped) will dull quickly - not sure why as 
carbide
> > drills hold up so well.  But I can assure you, I have tried and 
it's
> > not a good option.
> > Chris
> 
> 
> Well the drills dull too, after not that many holes. You notice it 
most  
> when you break one by accident, and the new one cuts much better. 
Some of  
> my drills make a burr in the copper because they are dull. But 
drills are  
> cheap, saw blades are not.
> 
> We are cutting glass after all, let's not forget that ;-)
> 
> ST
>