ZA and ZB connections ?
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@Veti said in ZA and ZB connections ?:
if you run G32 then you need to run a G29 and not a G29 S1.
It's quite in order to run G32 to correct for loss of sync of the Z motors, followed by G29 S1 to load a height map to compensate for gantry sag and any undulations in the bed surface.
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Happy New Year everyone !
I spoke too quickly ... I realized that when I wanted to print large pieces the leveling of the bed did not work finally!
While searching the forum, I found a case very close to mine, but unfortunately that has apparently not been resolved!
However, I would point out that before my mini IR probe, I had a BLTouch and the problem was the same!
Thank you.
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@Rudy2A said in ZA and ZB connections ?:
I spoke too quickly ... I realized that when I wanted to print large pieces the leveling of the bed did not work finally!
Are you now using G32 to level the two sides of the bed, with the two Z motors connected to separate drivers? If so, after running G32, do you then get a level height map if you run G29 S0 ?
Duet WiFi hardware designer and firmware engineer
Please do not ask me for Duet support via PM or email, use the forum
http://www.escher3d.com, https://miscsolutions.wordpress.com -
@dc42 said in ZA and ZB connections ?:
Utilisez-vous maintenant G32 pour niveler les deux côtés du lit, avec les deux moteurs Z connectés à des pilotes séparés? Si oui, après avoir exécuté G32, obtenez-vous une carte de hauteur de niveau si vous exécutez G29 S0?
Need details ...
When I look at my height map, I see that the corner in front on the left (near the arrows XYZ) is too high! So, if I understood correctly, I must lower my bed on this side using the adjusting screw. However if I look at my test print which is in the same place, the deposit of the PLA is too high and does not really stick to 100% on my bed, which could indicate that I should assemble my bed!
What does the grid (reference model) represent perfectly straight on my height map and what does the green part (for me) represent? -
@dc42 said in ZA and ZB connections ?:
Are you now using G32 to level the two sides of the bed, with the two Z motors connected to separate drivers? If so, after running G32, do you then get a level height map if you run G29 S0 ?
Yes absolutely, I use the two separate Z pilots ... G32 then G29 ...
But the problem is that, even if I adjust my bed in any way after doing G32 and G29, the result remains the same! It is as if the correction of my bed keeps in mind the error of the departure! Difficult to explain ! But, I find myself after the correction with the same faults (in the same place as at the start) without any correction having been made and yet I see perfectly moving the Z differently.
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@Rudy2A your mesh would benefit from more points. It's fairly sparse.
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@Phaedrux said in ZA and ZB connections ?:
votre maillage bénéficierait de plus de points. C'est assez clairsemé.
For the sake of understanding, I prefer to use the P of M557 than S
M557 X11: 250 Y11: 252 P4
What would be the P value to make it more meaningful? -
@Rudy2A said in ZA and ZB connections ?:
votre maillage bénéficierait de plus de points. C'est assez clairsemé.
Par souci de compréhension, je préfère utiliser le P de M557 que S
M557 X11: 250 Y11: 252 P4
Quelle serait la valeur P pour la rendre plus significative?My bed is 300X300
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Try double?
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@Phaedrux said in ZA and ZB connections ?:
Essayez double?
Here, I get this result from M557 P4 to P8 ...
The worst part is that by looking for solutions to my problem on the forum, I found quite a few cases similar to mine, but each time, the cases were not resolved or were not commented on final solution, it's a shame!
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As I said a little higher ... No matter the result of my height map by making a G29S0! My first layer does not receive any correction, the impression always remains identical in all the tests (and yet the height maps are never identical) ... same defect in the same place, it is frankly annoying not to understand!
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How are the motors connected to the leadscrews? Can you please attach a picture?
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@DIY-O-Sphere said in ZA and ZB connections ?:
Comment les moteurs sont-ils connectés aux vis-mères? Pouvez-vous joindre une photo?
Like this...
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Do you see the Z axis turning while it's printing?
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@Phaedrux said in ZA and ZB connections ?:
Voyez-vous l'axe Z tourner pendant l'impression?
Yes absolutely, my CoreXY printer (it's my moving bed) has 2 Z axes. One Z on Za and the other on E1, I can see my Z axes turning indifferently during my print tests ...
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@Rudy2A said in ZA and ZB connections ?:
As I said a little higher ... No matter the result of my height map by making a G29S0! My first layer does not receive any correction, the impression always remains identical in all the tests (and yet the height maps are never identical) ... same defect in the same place, it is frankly annoying not to understand!
can you post a picture of the first layer?
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@Rudy2A
I hate those types of couplers, as they behave like a spring.
But I think that in your case, the lead screw is fixed in Z by the upper bearing.
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@Veti said in ZA and ZB connections ?:
pouvez-vous publier une photo de la première couche?
here is... the quality of the photography is not great, but we can clearly see where my first layer is crushed, and where it is too high!
Whatever I do as a setting, it comes down to the same every time! it's like a model is in memory on the printer ...
Even if I level my bed using the adjustment screws with a print in progress, I manage to have a very appreciable result ... Only, when I launch a new print test (without restarting the printer) my settings are not taken into account and we start again on a leveling of the bed almost identical to the photograph above!
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@Rudy2A
post the picture of the mesh grid.
while printing check with m122 that mesh grid is active. -
@Veti said in ZA and ZB connections ?:
poster l'image de la grille maillée.
lors de l'impression, vérifiez avec m122 que la grille de maillage est activeHere is...
