This is a version that is flipped "upside down"
To give more vertical space and a cleaner look.
Slot for clamping is a bit wider. And the holes is 3.5mm for easier accommodation
of the m3 screws. Was going to do insert for the nuts. But risk is that someone have nuts that won't fit.
Same bearings as the original design.
Did produce a pair. Worked nice. with some minor scraping with a exactoknife. It got a nice fit for the bearing. No need to glue. the holes for the guide rod, was nice after a deburr too.
Almost to tight fit. Be carful when thightning the m3 screws and nuts.
Bearings in use is 608ZZ cheap and easy to find standard bearing.
Print upside down, with support for the inner bearing stop.