MPCNC Temporary Hard End-Stops

A set of temporary clamps for the center X and Y-conduit for a Mostly Printed CNC. Designed for 1/4-20 bolts, and a couple of knobs (I recommend the knob from this thingy" http://www.thingiverse.com/thing:876395)

If you don't have or use end stops on your machine, or if you have a large machine but don't want to work in the home corner, these clamps quickly create a local temporary hard end-stop for you to reference for production jobs or jobs with tool changes.

Photos demonstrate use on a small CNC machine to create a temporary zero location allowing repeatability between tool changes.

Tip - Add a piece of friction tape in the bottom of each clamp for extra holding power without having to tighten the clamps down so hard.

Compatible with MPCNC 525
Now available in these pipe diameters
23.5 mm
25.0 mm
25.4 mm
Are there any other sizes that people would like? Please comment.