This is a simple end stop with moderate travel that is designed for the Saunders Hobby Mod vice. I use it on my 6mm fixture plate, with holes spaced 20mm apart.
It will be about 2.5mm higher than the bottom of your part and since it is plastic, doesn't matter if you accidentally mill through it!
While this works made out of plastic, I will be milling it out of Aluminum as well.
Printing:
I used PLA, .4 nozzle, .2mm layer thickness, 25% infill.
The author marked this model as their own original creation.