Here are the files for the M3 slop nut that I promise. This is an anti-backlash design. Fitment requires a little finesse to make sure you are tight enough for it to work but still let the rod spin smoothly. Lubrication is your friend.
I have included the files for the aluminum bed and wood bed. Choose whichever suits your needs.
Post's attachments3mm_thread_adaptor_slop_anti-backlash - alu bed.skp 255.7 kb, 5 downloads since 2013-06-20
3mm_thread_adaptor_slop_anti-backlash - alu bed.stl 729.15 kb, 29 downloads since 2013-06-20
3mm_thread_adaptor_slop_anti-backlash - wood bed.stl 757.81 kb, 22 downloads since 2013-06-20
3mm_thread_adaptor_slop_anti-backlash.skb 257.66 kb, 4 downloads since 2013-06-20
You don't have the permssions to download the attachments of this post.
SD3 w/ mods:
Glass bed with QU-BD heat pad upgrade, threadless ballscrew w/ 8mm smooth rod, spectra line belt replacement, lawsy MK5 extruder, Lawsy replacement carriage, E3D hotend, Ramps 1.4 w/ reprap discount controller, DRV8825 drivers, 12v 30A PS, Acrylic case, Overkill Y-idlers, Filament alarm, Extruder fan + more.