My Rostock came with mechanical endstops:
The building instruction warns me on polarity on the Ramps.
i do not understand, it is a make/break switch. How can reversing the wires be any problem ?
Thomas
www.3daybreaker.blogspot.com
Orca V4.4 rebuild to Ramps with Mk8 and E3D, as well as a Rostock Delta Mini and an OLO in backorder :-)