10mm Linear Rod & Bearing upgrade for Anet A8 Plus X & Z axis's.

In recent weeks, my Anet A8 Plus has seen some significant upgrades, much of which involve replacing all the 8mm linear rods and bearings with 10mm rods and bearings.

I first replaced the Y axis rods and bearings to correct a problem that has plagued my A8 Plus since nearly the very beginning, and that was to correct for bed skew.  The A8 Plus has its Y axis motor mounted vertically so that it's belt rotates horizontally.  As the bearings wear, the bed has a knack of tweaking left as it moves forward, and right when it moves back.  Replacing the bearings does correct the problem, but I've replaced those bearings twice on a machine that's only 3 years old, and it was skewing again.  Upgrading the Y axis rods and bearings to 10mm parts seemed the least expensive way to correct that on-going problem.  My Y axis rod and bearing upgrade is available at:  https://www.printables.com/model/876916-bearing-carrier-for-lm10uu-bearing

Another upgrade my A8 Plus would see was to replace the factory MK8 extruder assembly with Sovol's planetary gear extruder.  Since I would be designing a whole new carrier assembly for the A8 Plus's extruder/hotend, I decided to include with that upgrade, 10mm linear rods and bearings for both the X and Z axis, hence, this 10mm X and Z axis kit.

This kit contains all the printable parts for upgrading the X and Z axis to 10mm parts.  I've included the “SC10UU_Bearing_Housing.stl” carrier I used for my Y axis upgrade, for use with the stock steel carriage that came with the A8 Plus, although, I'm not using those on my X axis since I integrated carriers with the Sovol extruder carriage I just installed:  https://www.printables.com/model/904858-sovol-sv06-extruder-mount-for-anet-a8-plus-with-10

When I designed my 8mm versions of these bearing carriers, I tried to keep everything as dimension-ally similar to the aluminum carriers that shipped with the original Anet A8, to include the openings for the 15mm snap rings for holding the 8mm bearings in place.  In order to use that same form factor, allowing me to mount these in place of the stock carriers at the same locations, and to continue using other modifications that fit this form, I omitted the snap ring cut-outs, making the LM10UU and LM10LUU bearings a friction fit.  Because these carriers no-longer use snap ring retainers, these 10mm carriers will NOT work directly with Igus Drylin bushings.

Where the right side X carrier is concerned, I've only included the version with the X axis belt tensioner.  If there becomes any interest in a right side carrier with no belt tensioner, I'll add an open ended version of that part.  That said, I did trim a bit of material from the X_Carrier_Tensioner to accommodate the intrusion of the 10mm bearing into the tensioner cavity.  The tensioner itself requires a M4 X 50mm hex cap screw, two M4 nuts and a M4 washer to be complete.