Grumps wrote:
Hi
I need to drill 1.5 - 2.0mm diameter holes to a depth of about 8mm in very
soft alloys / lead.
Using a small model maker's drill of unknown rpm only seems to get to about
2mm easily. The workpiece warms up (actually, quite hot) and it seems that
drilling stops.
Is there a technique for drilling this type of material? High rpm or slow?
Ta.


pull the drill and swarf out and try again.

The soft swarf clogs it,.

Lubrication and a low drill speed works best.