Ok folks I got more questions on the clamping.

I'm looking for a few toggle clamps to hold down plates to be drilled onto a flat plate with dowel pins. Can someone recommended me a few sources for those?

The job is to countersink 6 existing holes on a 1/8" thick steel plate (100 of them) that will be located onto a flat piece of aluminum. I figured a couple of tight toggle clamp will be the easiest to work with the dowel pins (there are other holes that don't need to be countersunk, I'll use those for locating the plate.）

if you guys have any other clamping ideas pls advise.

thanks

Daz