M558 H Little monster Delta

Phaedrux

Looking at your config I'm guessing you mean the Z trigger height value from G31 P25 X0 Y20 Z0.7 ?

crynool

I wish I had such a heightmap ...

M558 tells your printer from which height to start the probing.

In the guides, calibrating a delta, there is a section how to measure the trigger height (G30 S-1 or something like that)

fcwilt

@phaedrux said in M558 H Little monster Delta:

Looking at your config I'm guessing you mean the Z trigger height value from G31 P25 X0 Y20 Z0.7 ?

Well that would explain what he meant to do.

Good catch.

Frederick

Redemptioner

Your RMS is pretty good although your probe area looks rather strange

Phaedrux

@redemptioner Just a guess, but I think it's a circular bed shape on a delta and one edge is cut off because it's inaccessible to the probe.

RafB

thank you all for trying to understand my mistakes in writing and using a delta with duet.

Actually I speak of G31 H0.7 which does not crush my 1st layer.

G31 H0.8 = 1layer 0.3mm
G31 H0.7 = 1layer 0.3mm

Yes it's delta https://tevo3dprinterstore.com/products/2017-newest-tevo-delta-printing-area-d340xh500mm-openbuilds-extrusion-smoothieware-mks-tft28-bltouch-high-speed-3d-printer-kit?variant=49755163079

fcwilt

@rafb said in M558 H Little monster Delta:

thank you all for trying to understand my mistakes in writing and using a delta with duet.

Actually I speak of G31 H0.7 which does not crush my 1st layer.

G31 H0.8 = 1layer 0.3mm
G31 H0.7 = 1layer 0.3mm

If you move down to Z=0 where is the tip of the nozzle in relation to the bed?

Frederick

dc42

The G31 command in RRF has no H parameter.

Phaedrux

@dc42 said in M558 H Little monster Delta:

The G31 command in RRF has no H parameter.

He's saying H, but in his config it is Z.

@RafB If 0.7 versus 0.8 is not enough of a difference, perhaps try using baby stepping to make adjustments until your first layer is good, and then take the baby stepping and add or subtract it to your G31 Z height value to make the change permanent.

fcwilt

@phaedrux said in M558 H Little monster Delta:

@RafB If 0.7 versus 0.8 is not enough of a difference, perhaps try using baby stepping to make adjustments until your first layer is good, and then take the baby stepping and add or subtract it to your G31 Z height value to make the change permanent.

What does that value have to do with setting Z=0 to be just touching the bed?

I always obtain that condition by adjusting the H parameter in M665 for my deltas.

Frederick

Phaedrux

@fcwilt well it's not really clear if he's talking about M558 H or G31 Z. I'm assuming he means the trigger height of his probe affecting his first layer. But I could be wrong.

RafB

Another mistake on my part. I can not remember this code!

So actually it's not M558 but G31

I am french and the translation by google of the clibration of a delta printer is not clear. I know I would have to work at school to better understand English.

So when I change G31 Z + or- my print still has the 1st layer at 0.3mm

fcwilt

@rafb said in M558 H Little monster Delta:

Another mistake on my part. I can not remember this code!

So actually it's not M556 but G31

I am french and the translation by google of the clibration of a delta printer is not clear. I know I would have to work at school to better understand English.

So when I change G31 Z + or- my print still has the 1st layer at 0.3mm

Well I may be doing it wrong but I have always adjusted the distance from nozzle to bed at Z=0 by setting the H parameter in M665 (for delta printers course).

The only thing I have been able to determine about the Z setting in G31 is that it affects the generation of the heightmap.csv file.

I find the documentation about G31 to be a little confusing in some areas.

Frederick

Phaedrux

@rafb said in M558 H Little monster Delta:

So when I change G31 Z + or- my print still has the 1st layer at 0.3mm

Do you mean the display still shows 0.3? or you think it's still printing too high?
Can you make further adjustment with baby stepping?

Have you measured what the trigger height should be?

https://duet3d.dozuki.com/Wiki/Test_and_calibrate_the_Z_probe

https://duet3d.dozuki.com/Wiki/Calibrating_a_delta_printer

RafB

Hello,

Yes I followed all the procedures but rather this tutorial
https://www.youtube.com/watch?v=BgkJVgFnPaE

I hope that it is not the bltouch V2 which poses problem?

I just redo the procedure and I find 0.7mm

Well I will try to mount 100micron per 100micron to know if G31 Z works.

And reread
https://betrue3d.dk/bltouch-on-duet-wifi...

Phaedrux

The result of your heightmap looks very good. What is the problem you are actually having? Is your first layer printing ok?

RafB

Hello,

Yes it's my first layer that is 0.3mm. I am looking to go down to 0.2mm but G31 Z seems to change nothing.

fcwilt

@rafb said in M558 H Little monster Delta:

Hello,

Yes it's my first layer that is 0.3mm. I am looking to go down to 0.2mm but G31 Z seems to change nothing.

Once again if you do G1 Z0 where does the tip of the nozzle end up in relation to the bed surface?

Thanks.

Frederick

RafB

There is 0.3 between the nozzle and the bed

fcwilt

@rafb said in M558 H Little monster Delta:

There is 0.3 between the nozzle and the bed

Just to be sure - this is after doing G1 Z0?

If that IS TRUE then edit config.g - find the M665 command - edit the value of the H parameter by adding 0.3 to it.

See if that doesn't solve your problem.

Frederick