Chimera carriage for MG12 linear rail

thingiverse

I designed this carriage to utilize linear rails in place of the standard wheels that ride on 2020 extrusion, which comes with my printer. I incorporated a Z probe screw adjuster for the stock sensor, requiring a 3mm x 30mm threaded bolt with nut and a spring I happened to have on hand. All files are included individually as an OBJ file and a Fusion 360 file, with the STL file featuring all parts on a plate, allowing Thingiverse to display them in the preview screen above. This is how I printed them. The Chimera hot end that came with my printer is likely a clone of the E3D V5 Chimera hot end. The Chimera cooling fan mounted on the front is not my design; if you wish to use it, the file can be found elsewhere on Thingiverse (I apologize, but I've lost the link and would appreciate any help in finding it). Below are links to the linear rails I purchased, based on reviews of China-made rails. I also bought a bag of replacement bearings and swapped them out before starting to use the new rails. Linear rail: https://www.amazon.com/gp/product/B0762MKQFD/ref=ppx_yo_dt_b_asin_title_o06_s02?ie=UTF8&psc=1 Ball bearings: https://www.amazon.com/gp/product/B015RKOZ7G/ref=ppx_yo_dt_b_asin_title_o06_s00?ie=UTF8&psc=1