Workbee Z linear rail modification using HGR15 rails

thingiverse

may 2021 Licence changed from GPL to CC share alike as I may have to follow this licence specifically as its modified works. I am not a lawyer so the differences are lost on me. ***Ready for trial build*** 20th December 2020 Need to cut or get cut aliminium plate Alignment jig added, print 2 use the gantry itself to align second rial. 19th December 2020 Full 3d printed trial fit including T8 leadscrew. Spacing of T8 block needs to be increased to 30mm (from 4mm). 2 x 50mm M5 hex bolts or button hex bolts 2 x 1mm precision 5mm shims/washers 2 x 20mm alloy spacers 2 x 9mm alloy spacers (or any combo to get to 30mm) Stepper motor Here we fit a total of four 8mm bearings to improve thrust and stretch the T8 much like the tingle system. 4 x 60mm Hex bolts 4 x 40mm alloy spacers (existing) 4 x 9mm allow spacers 4 x 8mm bearings (2 x existing) 4 x 8mm bearings spacer washers (2 x existing) 4 x 8mm locknuts (2 x existing) Length of Z alloy C beam This will depend on your preference but we need at least 400mm (over the std 320mm) to allow for the extra space consumed by the HGR15 carriages. If we allow for taller Y end plates then 450mm or even 500mm is a better idea. 1 x 400mm C beam 2 x HGR15 rails 400mm 4 x HGR15 15c std carriages https://www.aliexpress.com/item/4000002373423.html 16 x M4 12mm hex button bolts 16 x 4mm washers 22~24 M4 hex bolts 16mm 18th December 2020 basic Trial fit went well, seems OK. need to get cut for real. Parts list, 6 x 30mm M6 hex bolts (bolts the 2 new plates together at the end) https://www.aliexpress.com/item/33006640055.html 12 x 6mm washers https://www.aliexpress.com/item/32999929615.html 6 x M6 nylocknuts https://www.aliexpress.com/item/33012168301.html The original front X plate has to be spaced out to clear for the 30mm M5 hex button Bolts as the old 25mm low profile bolts will not fit now. (not needed if you can find 30mm low profile hex bolts) 4 x 9mm M5 spacers to replace 6mm M5 spacers https://www.aliexpress.com/item/32853670053.html 3 x 3mm spacers. https://www.aliexpress.com/item/33021606483.html 7 x M5 70mm bolts https://www.aliexpress.com/item/32966157667.html 7 x M5 nylock nuts https://www.aliexpress.com/item/32611294007.html 14 x 5mm washers https://www.aliexpress.com/item/32615666608.html 8 x 30mm M5 hex button bolts https://www.aliexpress.com/item/32726777486.html 8 x 5mm washers leadscrew drive spacer The original is a 1mm precision washer and a 3mm spacer x 2 The new distance is 30mm. 13th December 2020 Trial fit didnt go well, 6 x 6mm bolts obscured, moved 4 outboard 6mm and hence 2 new plates needed. 12th December 2020 Updated mk2 plates and HGR15 to C Beam alignment jig. Best printed in something rigid like PLA for best alignment (PLA+, PETG flexes, ABS is not accurate as its shrinks) 6th December 2020 Z plate in 10mm to replace wheel assembly for Z with HGR15 linear rails. please not this has not been even test assembled yet so will probably need mods. Check back later.