Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4245532.
This is for the 10mm to 8 mm XY Joiner. I have included step files for the parts if you require to create a 8mm to 8mm derivative.
My stock XY Joiners on my Hypercube Evo build started to split under the tension of the drive belts and the general print orientation. I have since tried several remix but the ones I tried still had issue albeit not the ones the stock parts demonstrated. This part equally may have some long term issues but to date appears to be more robust than my previous printed parts.
This part is still printed in the original print orientation but I have included 4 x M3 x 50mm bolts which retain the parts forward of the idler shafts to help reduce splitting. I have also set the last 15 mm of the print to 100% in my slicer( I am aware this may be a bit of an overkill but it only added a small amount of print time relative to such a long print).
The part also uses M3 Nylocs for bolt retention except for 3 x M3 thermal inserts for the X & Y flags.
I have uploaded a version which includes the stock X Flag allowance but I designed this primarily to work with my Compact Dual Duct assembly which has its own End stop\Flag arrangement.
Link: https://www.thingiverse.com/thing:4245520
Printed with Amazon Basics Red PETG on an Ender Pro. I printed these parts at quite a high temp, 240 C with a low retraction rate to minimise delamination of layers when printing.