This what I use on my D-bot for the Z axis. I'm using an heavy 314x314x4mm aluminium bed, and with the original Spauda's build I had some issues with auto bed leveling and ringing.

This setup use almost the same materials than the original Spauda's D-Bot requieres except some specific screws and PC wheels instead of the black ones.

The concept is to use "wheel tensionners" to push on the verticals V-slot. I didn't try it with black wheels but I'm convinced that he pressure will damage them. I highly recommend to use PC wheels. The "wheel tensionners" give 2 advantages : -It kills the bed wiggles (and so ringing) -and you can level the back and the front of the bed by adjusting the wheels pressures.

Part of my D-Bot Upgrades collection.