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http://reprap.org/wiki/CoreXY
Re: Hypercube - Uneven Layer Lines / Z axis banding - 5 years ago
@MKSA That actually makes a lot of sense but I guess I never thought on that. Maybe I'll start changing my mindset to look the beauty in bulky, sturdy parts. One remark on the self tapping screws: Why is that better than nuts? Can't the plastic give a bit and the tapping start to fail? @the_digital_dentist that xy idler block looks very sturdy. Do you think that 2020 T-Slot isn't sturdy enough?by jcoelho - CoreXY Machines
Re: Hypercube - Uneven Layer Lines / Z axis banding - 5 years ago
Quotethe_digital_dentist The force applied to the motor comes from the pulley on the shaft. All that plastic around the motor body does little to improve overall rigidity of the mount. I would design the mount something like the one on the right: Here's one I used in my corexy sand table project- no visible flex at all (though I'm sure there must be some): When I design stuff like this, I placby jcoelho - CoreXY Machines
Re: Hypercube - Uneven Layer Lines / Z axis banding - 5 years ago
Will you be fabricating all the metal parts? What is your opinion on linear rails? Are they much better than the smooth rods/bearings combo? I've found those motor mounts, I'm thinking on printing them to see if that helps on the long term. But I'll start with the jacks as that's a faster print. I'm using 8mm for the Y axis, so I cannot use that XY Idler, but I'll look for something similar forby jcoelho - CoreXY Machines
Re: Hypercube - Uneven Layer Lines / Z axis banding - 5 years ago
That makes sense, thanks for clarifying. I'll make the jacking blocks as you posted. Not sure if you would like to share, but how did you get a better mount for the motors? 3D printing or by any other method?by jcoelho - CoreXY Machines
Re: Hypercube - Uneven Layer Lines / Z axis banding - 5 years ago
But do you think that it will improve the print quality in any way?by jcoelho - CoreXY Machines
Re: Hypercube - Uneven Layer Lines / Z axis banding - 5 years ago
I got a lot of replies, thank you all. I'll try to follow them all and reply to each one. QuoteAmyTheBun I'd start by making sure your e-steps and flow rate are correct. Just rechecked: e-steps are fine; to verify flow rate I printed a 0.8mm thick cube and it measured 0.8mm... I never did a flow rate check so I'm not sure if this is the best option. QuoteAmyTheBun then I'd check if the hotend haby jcoelho - CoreXY Machines
Hypercube - Uneven Layer Lines / Z axis banding - 5 years ago
Hello, I build a Hypercube and it has been printing very well. Recently I noticed that the print quality has significantly dropped. I checked all bolts to make sure they were tight, I replaced the belts as they were loose and almost "cut" on one side. I'm getting irregular walls on the prints vertical faces, but I can't seem to find a pattern. I don't get any play on the X-carriage if I try to moby jcoelho - CoreXY Machines