Anti-Backlash Nuts
From Zen_Toolworks_Wiki
Description
The Anti-Backlash nut applies tension force against the supporting axis frame and the lead-screw using a loaded spring to remove any amount of "play" (or space) that a standard nut and screw usually has. Zen Toolworks CNC DIY kits come with 3 bronze anti-backlash nuts - one for each axis.
