Carriage Depth Stop With Riser Blocks

A customer was wondering about the use of the carriage depth stop with the riser blocks installed.

Normal use of the depth stop.

Riser block installed. Note that the dovetail is offset to the rear.

The thumbscrew fouls against the riser, and the rod wouldn't hit the carriage.

Drilling a #21 hole.

Tapping #10-32

Works just fine. So a couple of minutes of non-precision work and the depth stop is now useable.