This anti backlash nut is based on a previous design (https://www.thingiverse.com/thing:2634333) and nuts I bought for the HyperCube Evolution (see these nuts in the custom bracket I created here: https://www.thingiverse.com/thing:2630802)
This update includes some grooves in the main part and some counter fitting edges in the small (spring loaded) nut to prevent movement of the nut.
As my Tr8x4 rods have not arrived yet, I designed this nut to play with the anti backlash concept on some Tr8x8 treaded rods I had laying around. Note that the design can handle both threads, just choose the one you want. All STL files are generated for TR8x8(p2), so 4 starts.
Note that this design uses the following libraries:
Threads, found at: https://www.thingiverse.com/thing:1659079
Chamfered primitives, found at: https://www.thingiverse.com/thing:1305888
Printed at 0.24 initial layer and 0.08 for all other layers on the Anet A8
Printed at 0.2 initial layer and 0.06 for all other layers on the UM3E