Details

• Use a PCB limit switch (I had these left over from my enders after switching to sensor-less homing) 
• 1xM5 bolt and t-nut to attach to laser cutter extrusion 
• 2xM3 bolts directly into plastic hold limit switch
• Tried to make these as  small as possible to preserve workspace size. 

Printing

• I print in orientation shown, supports touching build plate. 
• Depending on material and speed you might have use more cooling / slower layer times
  • I use ASA but even then I had to use auto cooling

To-do / Improvements

• Top should be a little bit wider so that the wheel closes directly on the plunger