Upgrade your teeny tiny Z gantry lead nuts to these suregrip anti-backlash power lead nuts!
Continue to use your existing 8mm lead screws but stack some mighty grip on them by putting these powerful anti-backlash lead nuts onto your Z gantry.
EXTRA POWER GRIP!!!
WorkBee CNC Upgrade V3 - Z Gantry only, retain 8mm leadscrews
1 of Power Lead Nut kits (8mm Power Lead Nut & Power Mount, bolts and other hardware)
6 of 35mm Low Profile Bolts
Spacers, 6 of 6mm, 1mm and 0.5mm for each wheel set (6 sets)
For experienced CNC DIY'ers the change to these suregrip anti-backlash leadnuts may be easier than you think.
REMOVE the Z gantry you are working on from the WorkBee CNC
Step1: Place the Z gantry somewhere you find comfortable where you know you can perform some maintenance.
Step2: Remove all the wheel sets, try to keep ALL of the parts in the same sequence
Step3: Attach the steel guide plate to the Z plate
Step4: Drill the centre holes using the 5.5mm drill. Clean as necessary. Remove steel drill guide.
Step5: Attach Powermount leadnut, do not fully tighten!
Step6: Insert the 35mm bolts into the Z gantry plate, stack the gantry plate on its side with the bolt head on the flat surface.
Step7. Add the 6mm, 1mm and .5mm new spacers to each bolt
Step8. Add each wheel set in turn to each bolt
Step9: Add the locknuts and tighten
Attach Z gantry to X plate and rebuild onto WorkBee CNC X axis, threading the 8mm leadscrew into the lead nut as necessary.
Now gradually tighten the Power Mount bolts, constantly moving the Z gantry up and down untill all bolts are tightened.