CR-10 mini Z dual axis upgrade

CR-10 mini Z dual axis upgrade

thingiverse

This was entirely inspired by Myfordboy's Z axis idea, https://www.thingiverse.com/thing:2569379. Full explanation in the TXT file of what each part is and why. Links to all parts are in the TXT file. Basically the same principle but I changed the position of the second Z screw to place it behind the upright. This meant I needed a tensioning mechanism, so I used the 3 idlers you see in the photo. Sliding the end ones in tensions the belt, worked better than expected, all 3 parts the same so easy to print. All for a CR-10 Mini but just increase screw lengths for CR-10. I used a new 500mm screw (T8*8) but re-using the original I needed to add a bit to get full travel, see TXT file. May be worth buying 2 new screws to save messing about. My basic premise is that everything 'floats' so is infinitely adjustable. Includes a new Z motor holder to make adjustment easier. Top bearings are large and the bearing holders can move around so no precision drilling. One other reason I deviated from Myfordboy's version as I don't have his engineering facilities/skills. Only needed to drill a bit of aluminum angle, which also allows some 'floating'. Links to parts here (not as links in TXT file). Parts Screw thread https://www.aliexpress.com/item/Trapezoidal-spindle-Multiple-options-Screw-with-Brass-copper-Nut-T8-8mm-Lead-Screw-Length-250-300/32805537765.html Pulleys https://www.aliexpress.com/item/2pcs-36-Teeth-2GT-Timing-Belt-Pulley-Bore-5-6-35-8mm-2meters-Width-6mm-GT2/32479689881.html **** 36T 8mm internal bore ***** Bearings https://www.aliexpress.com/item/608ZZ-Grease-8mm-22mm-7mm-608Z-Miniature-Ball-Radial-Ball-Bearings-10PCS-Pack/549643998.html Idler pulleys https://www.aliexpress.com/item/BIQU-Latest-GT2-Black-Color-Aluminum-Toothless-Timing-Belt-Idler-Pulley-20-teeth-for-3D-printer/32829921247.html Drive belt loop https://www.aliexpress.com/item/1PC-Rubber-In-Closed-3D-Printer-Parts-GT2-Timing-Belt-2GT-GT2-6-6mm-Wide-2mm/32869754298.html **** Note you want the 825mm belt **** same as myfordboy used.

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