Attach 6 V wheel assemblies to the Z plate with 30mm screws – and at one side of the plate, use 6mm spacers with a precision shim, whereas at the other side, use eccentric spacers with a precision shim:
Attribution and credit: picture copied from https://www.thingiverse.com/thing:2538752/files from file “WorkBee-Screw-Assembly-Manual.pdf” as made by Ooznest and made available under Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0) license (link: https://creativecommons.org/licenses/by-sa/3.0/ )
Then, attach the Z axis nut block:
Use 25mm or 30mm screws to attach the nut block – and position 3mm spacers between the nut block and the Z plate, as highlighted with the red arrow. Use M5 lock nuts to secure the screws and nut block.
Attribution and credit: picture copied from https://www.thingiverse.com/thing:2538752/files from file “WorkBee-Screw-Assembly-Manual.pdf” as made by Ooznest and made available under Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0) license (link: https://creativecommons.org/licenses/by-sa/3.0/ )
Now the x carriage will be built in a similar way as the Y side plates have been built, with 60mm screws, but notice that the high spacers are now on the top:
At the side of 4 wheels: first put a 6mm spacer + wheel + 9mm spacer + wheel + 9mm spacer
At the side of 3wheels: eccentric spacer + wheel + 9mm spacer + 3mm spacer + eccentric spacer:
And put the other x carriage plate on top and use M5 nylon lock nuts to close.
Now is also a good moment to attach the Z axis limit switch as it’s easier to reach now:
And attach the Z plate to the X front plate with 20mm screws:
And add the Z axis extrusion:
Attribution and credit: picture copied from https://www.thingiverse.com/thing:2538752/files from file “WorkBee-Screw-Assembly-Manual.pdf” as made by Ooznest and made available under Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0) license (link: https://creativecommons.org/licenses/by-sa/3.0/ )
And the Z axis motor and leadscrew:
Attribution and credit: picture copied from https://www.thingiverse.com/thing:2538752/files from file “WorkBee-Screw-Assembly-Manual.pdf” as made by Ooznest and made available under Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0) license (link: https://creativecommons.org/licenses/by-sa/3.0/ )
With 40mm spacers and 50mm screws:
Attribution and credit: picture copied from https://www.thingiverse.com/thing:2538752/files from file “WorkBee-Screw-Assembly-Manual.pdf” as made by Ooznest and made available under Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0) license (link: https://creativecommons.org/licenses/by-sa/3.0/ )