Anet A8 Z Axis CHUNK Reinforcement Top Mount & Z Motor Mount by TheWalkletts

Last crawled date: 3 years, 1 month ago

Significantly increase the stiffness of the Z axis arrangement.
Ties the leadscrew together with the bearing rod at the top with a ball bearing.
Tight fitting bearing rod points prevent the rods from being able to move.
Threaded rod between the two top mounts removes the Anet A8 cross bar flex and acts as a corner brace with the uprights.
Z Motor housings now single piece, and include a screw down point on the outer edge for fastening to a base board.
Top mounts are prepared with a 6.8mm diameter hole to allow tapping to M8 for the threaded bar tie rod. 8mm clearance through to the other side.
1: After printing, insert the bearing (should be a simple press fit)
2: Use an M8 tap to tap the tie rod hole from the washer flat side
3: Fit Z bearing rods into top blocks until all the way in. Do this on a flat wooden surface and tap the rod in until it stops moving.
4: Replace the Z motor housings. Clean out the bearing rod hole before fitting as this is also a good fit on the bearing rod.
5: Fit the top mounts with the bearing rods and guide the lower end of the bearing rod into the Z motor mount, and the top of the leadscrew into the ball bearing.
6: Use the original top mount M3 screws to fix the top mounts down.
7: Use the Z motor housing screwdown points to screw the A8 to the baseboard.
8: Re-level your bed & X Axis
9: Hopefully enjoy a reduction in Z banding!
Sounds like a lot of work, but actually only a 30 minute job once the parts are printed.
Top mounts take 1 x 608ZZ bearing each
Join the two top mounts using M8 threaded rod & nuts