Improving mesh bed compensation with M558 HX
-
@sykb said in Improving mesh bed compensation with M558 HX:
I tried to home Z with G28 Z command and it reported an error.
Yes trying to home just Z without first homing X and Y will lead to an error as I described. Does it give the error if you have X and Y homed prior?
-
@sykb said in Improving mesh bed compensation with M558 HX:
M350 X256 Y256 Z256 E16:16 I1 ; Set 16x microstepping with interpolation
It's not recommended to use x256 microstepping. It has a high load on the CPU for step generation and there's very little reason to use it. Use x16 with interpolation to x256 enabled. Lower cpu load and you still get the benefit of quiet smooth motor movement.
-
@Phaedrux I've just tried it. I commented out all the M564 commands and did not change another commands in the homing files. I homed X and Y first and then G28 Z. It reported the same error as before.
@Phaedrux said in Improving mesh bed compensation with M558 HX:
@sykb said in Improving mesh bed compensation with M558 HX:
M350 X256 Y256 Z256 E16:16 I1 ; Set 16x microstepping with interpolation
It's not recommended to use x256 microstepping. It has a high load on the CPU for step generation and there's very little reason to use it. Use x16 with interpolation to x256 enabled. Lower cpu load and you still get the benefit of quiet smooth motor movement.
I'll try it later, thank you for the support!
-
@Phaedrux said in Improving mesh bed compensation with M558 HX:
Z15
It's because your g1 x y move to position the probe also contains a z move. Z hasn't been homed yet so it's complaining. At the start of the file you're already lifting the z axis with an S2 move so you don't need to move it again afterwards.
-
It's because your g1 x y move to position the probe also contains a z move. Z hasn't been homed yet so it's complaining. At the start of the file you're already lifting the z axis with an S2 move so you don't need to move it again afterwards.
@Phaedrux It's working now. Thank you! But my main problem is not solved yet. The mesh bed compensation does not compensate the uneven bed during printing as you can see in the pictures above. Maybe you also could help me.
-
@sykb said in Improving mesh bed compensation with M558 HX:
G31 P600 X32.7 Y35 Z0.5 ; Set Z probe trigger
its hard to see from the picture, but it looks like the probe is in front of the extruder, so your offset is wrong it would be -Y35
-
@sykb
@peter247 said in Improving mesh bed compensation with M558 HX:@sykb
Is your off set correct ?
G31 P600 X32.7 Y35 Z0.5 ; Set Z probe trigger
So this say your probe is 32.7mm to the right of the nozzle X axis and your probe is 35mm to the back of the nozzle Y axis , Correct ?
Yep , I think I was right ? , it does look like the probe is right front
-
can you make picture that shows the entire bed and carriage?
-
After trying to figure out and finally figuring out(I think) how to input mesh grid for my printer which has center of bed as origin; I have decided to make my origin back to its original place in the corner.
I've decided this because I am not getting a good consistent squish across the various spots on my bed. Plus, I am not confident that the mesh on my bed that I got is correct. (See below)
I'm just about to redo my trigger height, but I have a question. In the guide(https://duet3d.dozuki.com/Wiki/Test_and_calibrate_the_Z_probe), it calls for you to bring your nozzle to the center of the bed and do the paper test. Afterward, it asks you to begin your trigger height routine. BUT, here is my question...
Seeing as my probe offset is so far(x-60 Y-12), isn't it a better idea to bring the probe over the same spot I did the paper check to make sure I have a consistent base height? Or, does the programming for the G29 somehow compensate for this?
Thanks in advance!
-
@Damien said in Improving mesh bed compensation with M558 HX:
Seeing as my probe offset is so far(x-60 Y-12), isn't it a better idea to bring the probe over the same spot I did the paper check to make sure I have a consistent base height?
Yes you can do that. It may help with any tilt inherent between the bed and the nozzle.
