SeeMeCNC Rostock MAX v2 Assembly Manual page 120

Next, you'll need to install a #6-32, 1/2" Stainless Steel flat head screw. This screw is what
triggers the end-stops when the printer is commanded to its "home" position.
Install the screw exactly as shown in Fig. 8-11. Use the rightmost hole in the u-joint carrier –
this hole lines up with where you installed the end-stop switch. When you install the screw, try to leave
the bottom of the head even with the top of the inside carriage plate as indicated by the green line in the
photo. This will give you a consistent start point when it comes time to calibrate the printer when your
build is completed. Make sure you install each screw the same way on all three Cheapskates. This will
help give you a consistent starting point when you being calibrating your Rostock MAX v2.
Fig. 8-11: Proper initial screw depth.
Repeat these steps for the two remaining Cheapskates.
Rostock MAX v2 Assembly Guide
Fig. 8-12: U-Joint carriages installed.
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