VC4 500 IDEX initial cold mesh

Good evening, today I reached the point where I could do my first mesh. On the first try, I had a 0.600 mm range. After re-tightening the linear rails and pulling the X-axis, I achieved a 0.350 mm range. The X-axis bend is around 0.2 mm. Afterwards i tried to fix the "hanging" back of the bed, but somehow i can't get under 0.35 mm. If I push the back right corner, the left right corner lifts and the other way round. Because of the vertical extrusion in the mid back, it acts like a rocker. I also tried slightly bending the horizontal extrusion in the back downwards, but no success. Do you have any suggestions how I can improve this mesh?
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10 Replies
Papalorian
Papalorian•2mo ago
I have the same problem, only mine looks more like a transmission tunnel. Nothing I do helps and it actually got worse after last round of trying. I gave up for now and am printing without issue so far. I haven't done anything really big yet though. This appears to be a widespread issue that RR needs to provide a solution for. This is too much money to spend and see a mesh like that. Expecially after using machinist squares and straight edges and following the build guide to the letter.
archen
archen•5w ago
Pull in your x gantry extrusion more. Bed looks nice, this is bowing gantry
WhatTheFuchs
WhatTheFuchsOP•4w ago
Thanks for the answers. I will try to pull up the gantry even more. Maybe with loose linear rail?
archen
archen•4w ago
no, you want to bend the gantry extrusion, not the linear rail
WhatTheFuchs
WhatTheFuchsOP•4w ago
Yes, I know what you are saying, but do you pull on the X gantry with the linear rail on it, or do you remove the linear rail to bend the X gantry extrusion?
archen
archen•4w ago
I pull with gantry mounted. Just don't be wreckless 🙂
WhatTheFuchs
WhatTheFuchsOP•4w ago
Now I pulled 4 times and not too weak. It just won't go under 0.35 😄
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WhatTheFuchs
WhatTheFuchsOP•4w ago
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WhatTheFuchs
WhatTheFuchsOP•4w ago
Do you think I can proceed like this?
archen
archen•4w ago
Did you tighten the x rail from one side to the other? If you tighten the ends first you will trap tensions If you have the heater mounted I would do it in heat soaked state

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