Andrew F in Australia
>No problems, Wiley. Thanks for the comments.

Essentially, you are cutting a shallow mortise in part. I find that you need a steep grind angle on a 1/8" or 1/16" chisel (the sixteenth chisel is called a skewer,) to avoid the edge chipping and breaking.

As well, if I didn't have a suitably small chisel handy, you could drill them out and then clean up with a standard 1/4" chisel.

CHeers,

Andrew