If the "pointy bit" is shallow enough, they can be used to transfer holes from one sheet (with holes) that is clamped against a new sheet without holes.
gil in Tucson
__________________ Gil Alexander EAA Technical Counselor, Airframe Mechanic
Half completed RV-10 QB purchased
RV-6A N61GX - finally flying
Grumman Tiger N12GA - flying
La Cholla Airpark (57AZ) Tucson AZ