What should I do about this?
This is a cold mesh of Vcore 400. Range is 0.174. The front seems mostly straight but there's an obvious slant to the two back corners which I have been unable to fix. Even if mesh range is okay this tells me something is wonky about the frame, no?
Edit: Reposted for higher res mesh and better pictures
16 Replies
harsh-harlequin•2y ago
That for a 400 is perfect. If you change the scale it's normal to look horrible.
Even as a cold mesh? Gonna get worse with heat
harsh-harlequin•2y ago
Even as cold mesh. You have to try with heat and see how it goes and then adapt. Variable Mesh etc 🙂
Ya like .375 so imma try retightening linears after a heatsoak. If that doesn't help imma do FDC.
harsh-harlequin•2y ago
I did that on my 300. was 0.300 (heated). Retightned the x rail it i managed to get 0.15x. Cold was like 0.113 after the adjustment.
How long ago? Does it eventually drift back?
Pretending the only issue is bimetal expansion, that would put gantry in stress at room temp which id assume would eventually slide back into the old position
Not necessarily... My 300 gets better with heat... Tends to get better after multiple heat cycles in fact and stays in 0.1 to 0.15 range
Really? How did you achieve that?
Heatsoak and rail retighten?
I only tighten the 2 outermost screws on either end of the gantry... The rest was just tweaking the frame and tweaking torques on the y rail bolts
Interesting...
It's trial and error really... Not worth obsessing over if you can get to 0.25 or so
Main issue is having to heatsoak every print
Gantry bow with heat?
Ya
Yeah, gets to be more of an issue with larger printers.... There are things you can try though
Ya i know