BED height map problem

[matej1006]

Hello

i have bed size 315 x430 mm with 8mm aluminium,
and i have i still get this height map!

What you guys think, maybe is too big space between 3 point for auto bed leveling with 3 independent z motor.

Photo from DWC

Thanks for any idea where could i have problem.

[fcwilt]

@matej1006

Hi,

What kind of aluminum is it?

Frederick

[jay_s_uk]

@matej1006 my guess would be a sagging gantry

[matej1006]

@fcwilt

i order form one German site which have special aluminuim which won't bend as basic aluminium
i paid much more for it

[fcwilt]

@matej1006 said in BED height map problem:

@fcwilt

i order form one German site which have special aluminuim which won't bend as basic aluminium
i paid much more for it

Can you provide a link to the site?

Thanks.

Frederick

[matej1006]

@jay_s_uk Hello Jay
maybe you will remember my problem hehe.

i will add some picture of my gantry and whole core-xy

[matej1006]

@fcwilt i will try to find it long time pass from when i ordered.
i think is like 18 month's

[CanDo415]

@matej1006
Do you use a magnetic bed?
I have the same problems with a 355x355 bed.

[matej1006]

@cando415
yeah from ziflex, realy and also like almost 1mm deviation

[CanDo415]

@matej1006
tyr the mapping cold and compare with a hot mapping. I think the differences are a problem of the magnethight

[matej1006]

@cando415 i did and there was not a lot of difference

[CanDo415]

@matej1006 so the temperature is not the problem

[T3P3Tony]

@cando415 if you have a straight edge you will be able to confirm quickly that its not the bed that is that warped. I think @jay_s_uk was right with the gantry.

[matej1006]

@t3p3tony yeah i will just unscrew a little all screw in linear rail and then try.
Maybe i have ma linear rails in back more closer than in the front of printer.
i hope is that

Matej