Can I drill v-blocks?

[PixMan]

Sometimes it's a little too fragile, too short, too small to just clamp in a vise, so I have been known to add a third clamping line by laying the v-block down in the vise to grip it between the V and the solid jaw of the vise. I don't do it with my best No.578 Starrett blocks, but the beat up older ones I've got off eBay, yes.

Also take a look at the way the Starrett No.568 V-blocks are made. The mating clamp engages via cutouts in the grooved sides. I don't mind using the pair that I have to mill smaller keyways or drill cross holes.

http://www.starrett.com/metrology/produc...Tools/568C