CoreXY V-wheel upgrade

thingiverse

CoreXY V-wheel upgrade *July 2019 All parts work, except need to lower the finial cable chain mount to the frame of the unit This is a design I’m working out for a larger printer (500x500+ bed). Working out the design and test with my Zonestar Z9M3 printer. I’m printing the last parts that are my drill jigs to hopefully get all the holes in the 2020 and 2040 bars correctly placed. The rest of the parts I have tested for fit and operation but have yet to be installed in a printer. (*hope this week) I have optical and old type endstops. I made the normal back of the printer the front so that no belts run in front of model and motors are also up front, plan to have prints to cover up some areas to make them safe. Currently using RailCore's motor and pulley mounts. Picture images does not show these lining up. https://713maker.com/railcore/railcore-ii-non-zl-series-motor-mounts AND https://713maker.com/railcore/railcore-ii-idler-pulley-mounts *No links are affiliated to me, just links I have a problem that only effect my prints that are just a single layer. The chain would pull down on the back of the hotend so that the far end of the bed from chain mount may be tilted very little. Normal pints are fine. I also want to have more stuff at hotend location so support for weight is necessary. I switched X axis to a 2040 rail and Openbuilds plates then made all these parts to test out new cable management layout. I hope to make finial version in aluminium CNC. I also redesigned my belt tensioner to use small 20 toothed pulley, verses my original version that had 60 toothed. Some parts will need some filing and such to get tight fits. I’m working off and 0.1mm addition to any holes to compensate for my printer. I have plans for a solid plate for all pulleys, motors and such to be mounted on, so to guarantee square. (teaser picture included) This is over kill for V-Wheels layout, but needed to see my for self before moving to rails. All bolts are M5 and lengths are marked in the pictures. There are some small screws needed for endstops. I’m also using brass heat inserts for some M5 bolts. No links are affiliated to me, just links https://www.amazon.com/gp/product/B077CHGNRV/ref=ppx_yo_dt_b_asin_title_o07_s00?ie=UTF8&psc=1 Will be posting more, interested in any insults, comments or ideas concerning maximizing CoreXY for accuracy. Also looking into non coreXY, attached X motor to X rail and separate motor for Y. Also very interested in the 3 point Z motors to adjust bed level. And more, • Easy insert/ remove Hot bed • Filament above printer to allow short Bowden tubes • 7 filament hotend with some neat things Enjoy! `mike