Need help! G29 mesh bed compensation over compensation
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@jay_s_uk i will have to keep this in mind when i get to that stage of the build
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@JamesM said in Need help! G29 mesh bed compensation over compensation:
@Jayson said in Need help! G29 mesh bed compensation over compensation:
belt
you should really get rid of those steel core belts on your printer.
I went to them to try minimizing stretch over the really long belts and wanted something strong enough to handle high speeds with nema23 steppers. still managed to snap a belt setting up sensor less homing. (gave up on that, not reliable enough for tool changing)
now I have homing switches.anyway. should have gone with gt2 10mm wide belts instead to get away from steel. might redesign.
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@Jayson said in Need help! G29 mesh bed compensation over compensation:
anyway. should have gone with gt2 10mm wide belts instead to get away from steel. might redesign.
the best belts are gates.
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@Jayson said in Need help! G29 mesh bed compensation over compensation:
anyway. should have gone with gt2 10mm wide belts instead to get away from steel. might redesign.
Have you considered stepping up to 15mm 3GT belts?
Frederick
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@fcwilt didn't know they went that wide. my old printer came with 6mm belts so that's just what i got for this.
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some suggestions
gate gt2 12mm
https://e3d-online.com/products/gates-powergrip
-2gt-belt-12mm-x-100mm?_pos=5&_sid=9dad4abd8&_ss=rgt3 up to 15mm (they also sell the pulleys and idlers)
https://www.aliexpress.com/item/32246715230.html -
@Veti i can't find a 20T GT2 pully that fits a 12mm belt and a 6.35mm motor shaft. might have to order them for 5mm shafts and take them too the local machine shop.
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@JamesM wow were you ever right about those steel belts. just a few test prints and the are broken.
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I've never used them but I've seen it mentioned many times to steer clear of them unless your printer was properly designed for them.
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@Jayson said in Need help! G29 mesh bed compensation over compensation:
i can't find a 20T GT2 pully that fits a 12mm
https://de.aliexpress.com/item/4001116400764.html
edit nevermind, not 6.35
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@Veti I think you must be right about the sagging axes. Or possibly bent. I redesigned my z motion system and now have two motors, leveled the bed the best I could and put 6mm regular belts on it for now. It's a bit better but still has the same problems in the same spots. The center of the bed is usable now so I can start printing the parts for my redesign.
Bigger belts smaller z probe offset and might switch to 20x40 extrusions on edge to mount my linear rails on
