MGN12 Keeper

thingiverse

This is a simple snap-in-place keeper for MGN12 rails, to keep the carriage block from sliding off the end and scattering its ball bearings into the ether. It fits into the 6mm and 3.5mm holes in the rail, and snaps onto the side grooves. To remove, simply pry it off. Print 2 for each rail you want to use them on. You may be interested in: An MGN12 rail: https://www.thingiverse.com/thing:3744548 An MGN12C carriage block: https://www.thingiverse.com/thing:3744533