Independently leveled Z axis Issue

fcwilt

@mrenz999 said in Independently leveled Z axis Issue:

@fcwilt Perhaps. I did print the tool but things move so I will recheck them.
Is there a way to add the a and s parameter to your bed.g when doing the leveling so it does multiple probes ?

Yes but is there some reason you cannot modify the existing M558?

Frederick

3DPrintingWorld

@mrenz999 said in Independently leveled Z axis Issue:

@3DPrintingWorld I pulled screws out of all of them and started a retighten. Trying to see if something came loose.

Ok, that makes sense.

mrenz999

I can but does that affect the bed leveling as well ?

fcwilt

@mrenz999 said in Independently leveled Z axis Issue:

I can but does that affect the bed leveling as well ?

If affects the way the probe works where ever it is used.

Do you wish to have it behave in different ways in different places?

Frederick

mrenz999

@fcwilt Not necessarily. I just want it to do multiple probes when it checks bed leveling when I home the printer.

3DPrintingWorld

@fcwilt said in Independently leveled Z axis Issue:

Why the G29 S3? The G29 S0 creates the height map and loads it.

Sorry I should have deleted that, I was making edits to mine before I posted it.

fcwilt

@mrenz999 said in Independently leveled Z axis Issue:

@fcwilt Not necessarily. I just want it to do multiple probes when it checks bed leveling when I home the printer.

Well the intent of the A and S parameters is to increase the accuracy and repeatability of the probe.

So I have always set them and let them take affect whenever the probe is used.

Frederick

mrenz999

@fcwilt makes perfect sense. I will set that. Thank You

martin7404

here is my 4 point map

fcwilt

Well I've completely lost track of who was having problems with what.

@3DPrintingWorld was the OP.

Then @martin7404 joined the discussion.

Then @mrenz999 joined the discussion.

Have we solved anything for anyone yet?

@martin7404 your 4 point height map suggests your bed is quite level.

Frederick

3DPrintingWorld

@fcwilt said in Independently leveled Z axis Issue:

@martin7404 your 4 point height map suggests your bed is quite level.

Martin is just bragging!

I think my issue might be the magnetic sheet cracking causing a ridge making it not flat in the back left corner. I'm going to take off the magnet tonight and give it a go with just glass on on aluminum. I just cant be down too long because I'm behind on parts.... I need to build more printers.

My bed has ever been as flat as I would have liked it. I may take a skim cut off the top. Has anyone had good luck attaching a silicon heater back on after its been removed?

martin7404

I am not bragging, just chime in to share that with faulty board/drivers I got wrong compensation in triple Z setup, the rest is too much I agree.
My bed is within a few thousands without the magnetic mat and the mat is off with 0.1 mm

3DPrintingWorld

@martin7404 said in Independently leveled Z axis Issue:

I am not bragging

I know, I'm just giving you a hard time.

martin7404

MY new board is here tomorrow so I will be able to go back to original setup.
P.S , Until now I was using prusa slicer profiles of GUI for left and right tools that activates only needed tool and today started calibration prints with dual material, and as far both tools are activated in the beginning , there is difference and it is that during print the standby tool cariage is not moving at least visualy

3DPrintingWorld

@martin7404 That's strange, not sure how that would make a difference.

3DPrintingWorld

@fcwilt My bed is definitely bent in the back corner. I'm not sure if this is entirely the issue because it gives a deviation of .1mm but its definitely more than that. I did not consider this as I didn't have any issue for the first six months of use. I'll take it into work and have them make a skim cut to see if this helps.

Bare aluminum

Glass sitting on top

Do you know why the mesh is not centered but in the negative?

Phaedrux

@3DPrintingWorld said in Independently leveled Z axis Issue:

Do you know why the mesh is not centered but in the negative?

That's usually because you're not setting Z0 with G30 before doing the mesh.

3DPrintingWorld

@Phaedrux It homes first which has a G30 at the end so I thought that would apply but Ill try a G30 right after the G28 and before the G29.

Phaedrux

I'd have to see exactly what gcode is happening in order and what your probe is etc. Normally the Z0 point would be green and the differences above or below. But it's all below, so that means where ever Z0 was set is above the surface of where it thinks the bed is when the mesh was created.

The total deviation is quite small though so the heightmap can appear exaggerated. There's also only 4 points, so it could very well be obscuring the Z0 position because it's very far away from the probed points of the mesh. I think a higher resolution height map would tell a more accurate story.

martin7404

@3DPrintingWorld Today while comisioning my new coreXY and as far my plate was givin 0.15 mm deviation on the G29, I played a little with G32
Try this as bed.g and see what is the result

G29 S2
;M561
;G28 home

G30 P0 X15 Y15 Z-99999     ; Probe Left
;G30 P0 X15 Y285 Z-99999     ; Probe Left
G30 P1 X200 Y285 Z-99999   ; Probe Middle
;G30 P0 X200 Y15 Z-99999     ; Probe Left
;G30 P0 X331 Y285 Z-99999   ; Probe Middle
G30 P2 X331 Y15 Z-99999 S3 ; Probe Right




G30 P0 X15 Y285 Z-99999     ; Probe Left

G30 P1 X200 Y15 Z-99999   ; Probe Middle

;G30 P0 X331 Y285 Z-99999   ; Probe Middle
G30 P2 X331 Y285 Z-99999 S-1 ; Probe Right