Commissioning Mesh - Looking for assistance

Hi all, looking for some assistance with my bed mesh. I've adjusted the feet on my printer and gotten it down from 1.2mm range to 0.7mm range, but I'm still seeing a dip in the back. I'm also seeing that odd curve on the bed. I've tried loosening and resetting my X linear rail for that so far. Any input is greatly appreciated.
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20 Replies
Sky
SkyOP2mo ago
btw this is a v-core 4 500
WhatTheFuchs
WhatTheFuchs2mo ago
I would say try abd pull your X-Axis a bit like statet in other threads. Looks like your gantr is bend
Sky
SkyOP2mo ago
Is the way to fix that rotating the gantry? And does that involve full disassembly of the X gantry? I’ll take a look a the other threads, there are a lot of them i am going to rotate the gantry tomorrow and pray it is not the bed, but using a flat hard ruler that i tested with a square seems to indicate the bed may be warped I am sad to report that even after rotating the gantry 90 degress, I am seeing the exact same mesh
Sky
SkyOP2mo ago
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Sky
SkyOP2mo ago
which suggests that the bed is the problem
Sky
SkyOP2mo ago
i cannot get that rear left side to lift at all
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Sky
SkyOP2mo ago
whether i lower or raise it, it just generally stays the same
chicken
chicken2mo ago
the twist needs to be dealt with. Have you tried loosening the x rail and retightening it from one side to the other? I am assuming the bed is flat as there have been very little defective beds it seems like besides a few that were handled without care by DHL 🙂 do you have a straight edge you can check the bed to make sure its not the problem?
Sky
SkyOP4w ago
As an update, RatRig agreed that the bed was warped, I am pending a replacement from them
Sky
SkyOP3w ago
I got a new bed from RatRig and the results are drastically better
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VisualTech48
VisualTech483w ago
The bed is great. Your basicly in the middle dipping making your back going down. If you pull your gantry in the middle by hand UPWARDS and then redo z tilt and bed mesh it will be flat.
Sky
SkyOP3w ago
@VisualTech48 its wild something this simple can help holy hell thank you
Sky
SkyOP3w ago
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Sky
SkyOP3w ago
WITHIN SPEC!!!!!!!!
VisualTech48
VisualTech483w ago
Yeah its just how it is with a big machine, also look at bi-metalic. You might suffer from it when its hot
dickpoop
dickpoop2w ago
Can you please elaborate on this? I have the exact same issue with my mesh. Just literally yank up on the gantry itself without loosening anything?
VisualTech48
VisualTech482w ago
@dickpoop basicly just to prove the point. That means that your middle dipped during time. The issue is to fully fix it you either loosen the rail, put your bed onto what you usually print with then tighten the bolts so the dip is only present when it's cold. Or get a titanium tube from @Mike-Toro3D and not worry much about changing temperatures.
dickpoop
dickpoop2w ago
I bought a lightweight gantry from Spannsysteme for my Idex conversion, but now I'm worried something aluminum with even less mass is going to make the issue worse
VisualTech48
VisualTech482w ago
It will for sure. @dickpoop and we've seen issues with becqon contact as well It won't be perhaps much of an issue if you don't go high temp and enclosed but becqon contact has been known to have inconsistentcies with those. Also you dont really gain that much as the acceleration suggestions are mostly for the outer walls.
dickpoop
dickpoop2w ago
All very good to know, thank you for the info!

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