How to fine tuning printings

peirof

Hi,

after now, i dont need printed pieces are precise in measures, but now i need that are precise....

After figthing with calibrate a Delta, has acomplish print this piece....

0_1549394010439_Calibration 100 mm.jpg

The teorical measure of this piece, are 100 mm in X, Y and Z...

How you can see, in Y and Z... the printed measured piece its aceptable... but in X=97.95 mm vs 100 mm, there is to diference.

How i can correct this? with M92? i am not sure...

From wiki

M92: Set axis steps per unit
Parameters

This command can be used without any additional parameters.
Xnnn Steps per mm for the X drive
Ynnn Steps per mm for the Y drive
Znnn Steps per mm for the Z drive
Unnn Steps per mm for the U drive
Vnnn Steps per mm for the V drive
Wnnn Steps per mm for the W drive
Ennn Steps per mm for the extruder drive(s)

Reading wiki... i have not clear if this afect to tower axis, or cartesian axis...
and
How i can manage the diference between X and Y...? think remember, there are a Gcode, that scales a axis

Thanks

dc42

You can correct the scaling using the M579 command. But I suggest you also check that the scaling is consistent.

PuterPro

Hi @peirof !

You neglect to say what kind if printer you have, rather important.

There are a lot of things that can affect calibration of the axis.

Binding bearings or threaded rod, loose belts, stepper dropping steps, on and on and on.

Although you CAN scale using G-Code, you're fixing the symptom, not the cause, and as @dc42 points out you don't know if it's consistent.

It may be fine in one place on an axis and way off in another where there's binding or other issue!
If you scale in a good area, you'll be off.

You might check out these calibration sticks from Thomas Sanladerer, be sure to watch the accompanying video (scroll down) where he discusses axis calibration.

https://www.youmagine.com/designs/calibration-sticks

There are a lot of support groups on Reddit and Facebook as well as Thingiverse that would be better places to get help in ensuring your axis are set up right before you start playing with scaling. Mechanicals must be right BEFORE you adjust software.

Reddit FixMPrint is a great place to start. https://www.reddit.com/r/FixMyPrint/

I suggest you find the cause, not adjust the symptom ...

deckingman

@puterpro said in How to fine tuning printings:

Hi @peirof !

You neglect to say what kind if printer you have, rather important......................

Not wishing to be pedantic but he says it's Delta in the second sentence of his OP.

PuterPro

@deckingman said in How to fine tuning printings:

Not wishing to be pedantic but he says it's Delta in the second sentence of his OP.

...Sigh... Yep, he does. Workin' on that halo ... LOL