Strange Ringing artifacts on coreXY
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@kuhnikuehnast : If you have access to Misumi, they also have quality stuff (not cheap though
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@whosrdaddy said in Strange Ringing artifacts on coreXY:
@kuhnikuehnast : If you have access to Misumi, they also have quality stuff (not cheap though
).which parts would you recommend from misumi? As they offer a lot of different belts / idlers / stepper pulleys it seems quiet confusing!
But anyway, short update:
The problem still persists! Tried now the following:-
Installed "TL-Smoother" (https://www.banggood.com/TL-Smoother-Addon-Module-With-Dupont-Line-For-3D-Printer-Stepper-Motor-p-1222339.html?utm_source=google&utm_medium=cpc_lang&utm_content=bruno&utm_campaign=fr-sds-ele-3dprinter&stayold=1&cur_warehouse=CN ) They are recommended usually for DVR8825 or A4988/2 drivers but I wanted to give a try--> didn't reduce the ringing
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updated the whole system to flat idlers only and mounted the stepper motors at the back. (so the only toothed - belt- interaction would be of the stepper motors. And after a short distance, the belts are redirected by flat idlers so possible vibration caused by the toothed idlers would be minimized. ) - If anyone also wants to give a try, here is the thingiverse link: https://www.thingiverse.com/thing:2975496
--> this didn't work either...
I am now considering to upgrade to Hiwin rails, to gain more stability... But I don't know whether this will really help solving this damn problem...
Do you think upgrading to flanged bearings would maybe help? (If yes, which kind of bearings (type) would you recommend? And how would you clamp them? I think the usual way with 3 mm bolts isn't the best?
greetings kuhni
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Btw. just had another Look at the e3d toolchanger: if theese holders shown in this picture are printed with their new toolchanger it seems they'd suffer the same probleme as I do...
https://static.e3d-online.com/wp/wp-content/uploads/2018/03/above-calibration-600x450.jpg -
I saw something in a Gates white paper about using smooth pulleys with belts, and they recommended using a pulley that is equivalent diameter to a 40 tooth pulley as a minimum. For GT2 belt, that would be about 25 mm diameter. I use stacked F608zz bearings for pulleys (22 mm diameter, so almost as large as the minimum recommended size) and have none of the vertical lines in print walls that you are seeing with the GT2 belt teeth contacting the smooth bearing surfaces. I use 8mm bolts for the axles, though shoulder screws might be better.
The mass is pretty high - there are 8 bearings and two big, heavy bolts on the ends of the X axis, so if you're one of those guys for whom speed is the prime measure of a printer's worth, you might want to find something smaller and lighter.
I mounted the pulleys in square aluminum tubing so that the top and bottom of the pulley axle would be supported to minimize inward flex caused by belt tension. The large bottom surface of the tubing is screwed down to the Y axis bearing blocks with 4 screws. It is very stable.
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Has anyone managed to solve this issue ?.
Am running into the same issue with an e3d styled corexy gantry with the belts crossing over at the back.
Thanks !
Hussain! -
@hussainsail2002 said in Strange Ringing artifacts on coreXY:
Has anyone managed to solve this issue ?.
Am running into the same issue with an e3d styled corexy gantry with the belts crossing over at the back.
Thanks !
Hussain!Did this happen to a gantry using linear rails? Cause this was a possible solution I wanted to try next...
