Another Predator

NexxCat

@Carlo
What is your current Z probe offset?

Carlo

G31 P100 X0 Y0 Z-0.159

NexxCat

@Carlo
I can't remember offhand which way to adjust the offset to bring it closer, but try both of these, one will certainly be too high, but the other, does that give you a 0.1mm gap when running the macro I posted?

G31 P100 X0 Y0 Z-0.059

G31 P100 X0 Y0 Z-0.259

Carlo

@NexxCat

They have all been tried

it's 0.05 to bring it closer dc42 suggested 0.05 so I've tried all the -0. possible infact the video I posted is -0.05

NexxCat

@Carlo
I know you've tried them whilst printing, but try -0.059 and run the macro. Is the gap 0.1mm?

Carlo

@NexxCat

Doing it now

Bang on

NexxCat

@Carlo
So with -0.059, the gap is exactly 0.1mm after running the macro I posted. Correct?

Carlo

@NexxCat

Yes spot on 0.1mm

NexxCat

@Carlo
Ok, set that in your config. Then create the bed mesh with G29 S0. Once the mesh is complete, try to print the levelling model.

I know you've done this so many times before, but let's try now we know the nozzle positioning is correct ok? Use the level_test.gcode I have you before, because I know it doesn't have anything in it to mess with the settings.

Carlo

@NexxCat

Will do that now

Thanks
C

Carlo

@NexxCat

It failed but it's too close to the bed just I think but its the best its ever looked.

NexxCat

@Carlo
So it was sticking but not extruding because it was too close? Try changing the offset to say -0.1?

Carlo

@NexxCat

Sorry been having net issues i'll adjust it 0.01 increments see if it works better.
It was extruding and really sticking but as it did the next pass it was squishing too hard almost transparent and curling up at the outer edges indented in the middle as it cooled

Thanks
C

Carlo

@NexxCat

Hi NexxCat,

Can I ask is Z hop enabled in the bed level test file you kindly sliced for me ?
Or is that controlled via config.g ? ...so print files call M207: Retraction if Z hop is set on M207 in config.g Z hop is invoked on all Retractions ?

Thanks
C

droftarts

@Carlo said in Another Predator:

It was extruding and really sticking but as it did the next pass it was squishing too hard almost transparent and curling up at the outer edges indented in the middle as it cooled

This makes it sound like the first layer printed fine, but when printing the second layer it was too close, ie it didn't move correctly/far enough in Z. This made me think either you Z jerk or acceleration is too high, or your steps per mm are wrong (which would explain a lot!). I haven’t found the standard Marlin config for the Anycubic Predator, but did find https://github.com/halofx/Marlin-2.0-Predator/blob/master/Marlin/Configuration.h

Steps per mm on each axis are 80, for standard 1.8 degree motors. You haven’t changed yours for 0.9 degree, have you?

I haven’t been through the Marlin config for acceleration and jerk settings, as on phone with tiny screen! But would be worth checking. Just remember Marlin specifies speeds in mm/sec, RRF in mm/min. If you have the Marlin configuration.h you’re running on your standard board, even better; please post it.

Ian

Phaedrux

@Carlo said in Another Predator:

Can I ask is Z hop enabled in the bed level test file you kindly sliced for me ?
Or is that controlled via config.g ? ...so print files call M207: Retraction if Z hop is set on M207 in config.g Z hop is invoked on all Retractions ?

Firmware retraction must be enabled in the slicer. That will replace any G1 E-# moves with a G10/G11 to retract and unretract. The config.g must then contain an M207 command to tell the firmware how much and how fast to unretract. Zhop can be added in the slicer and or firmware retraction command.

If you don't have an M207 command in your config.g then nothing will happen when a G10/G11 is encountered in the gcode file.

If you look at the gcode file itself you should be able to tell by looking for G10/G11.

Carlo

@droftarts

Hi Ian,

No they are set to 80 ...this is a Gorrila board which as far as I know is chit-tu based ? so M500 is like M8500 and not sure all the commands for it are known and the board is locked down... again as far as I know.
I wish it was set wrong...NexxCat was kind enough to have sliced the test file for me and it's very close so just using that to adjust trigger height..
it's really close but the Z hop seems to be an issue.

Thanks
C

Carlo

@Phaedrux

Hi Phaedrux,

So my M207 is :M207 S1.0 F10 R0.8 T15 Z0.0 yet it is still Z hopping which is why I asked the question.

Thanks
C

Phaedrux

@Carlo said in Another Predator:

Z0.0

Then it would be baked into the sliced gcode.

It sounds like you're getting improved results now?

Carlo

@Phaedrux

Hi Phaedrux,

I feel like I am yeah.... no single layer yet setting up retraction/unretract FR etc which look good now(nimble so not used one before)
Trigger height is now Z-0.064 ....from my point of view not sure what the point of the Smart Effector is tbph but causing 6 weeks of frustration as what it reports... well is misleading.
i'll keep tweaking settings ..see if it will finally print that 1st layer .

Below print is mesh enabled 2 passes 8 mm/sec I measure it at .2 mm with calipers layer height is .2 mm so not sure what to change now.
I've rechecked extruder calibration its on the money.

GOPR1088 (2).JPG

Thanks to everyone for your help.
C