This is the STL file for the main part to modify the Anycubic Photon Z-Axis. The part should be made out of aluminium but I' love to see someone try with a strong 3D printed material.

This video will show you how to complete the modification:
https://www.youtube.com/watch?v=7oYx40jhtGA

Additional Parts required (UK based links):
MGN9H Carriage x2 & rails x 2 (ask them to cut each to 225mm):
https://www.amazon.co.uk/dp/B06Y49F8CV/ref=cm_sw_r_oth_api_i_kocGCbCQ9ZVKM

Aluminium Angle x2 (1 1/4" x 1 1/4" x 1/4" - 55mm long each):
https://www.clickmetal.co.uk/click-by-category/angles/aluminium-equal-angle

M3 x 5mm bolts x22:
https://www.amazon.co.uk/dp/B00SN3BFKA/ref=cm_sw_r_oth_api_i_hscGCbTY8BZP4

M3 x 8mm bolts x8:
https://www.amazon.co.uk/dp/B00SN3KIBC/ref=cm_sw_r_oth_api_i_mtcGCbKFEPWPS

If you make this modification, or make it better, please let me know.