'Auto tap' is always to high - no squish of first layer to bed

[renekar]

Using textured bed w SSB and Tap and tried your script with standard installation. Ending up always in an increase of z (0.1 - 0.2) with result that nothing squish on the bed.

[Anonoei]

Could you share the console output from Auto TAP?
Also, are you using a v2 or a trident?
Thank you!

It's also likely this is just a textured PEI thing, since it needs more squish than smooth PEI. You could try using SET_GCODE_OFFSET Z_ADJUST=-0.1 MOVE=1 after AUTO_TAP

[renekar]

using v2.4

console output:

20:10
Auto TAP Results
Samples: 3, Total Steps: 23
Probe Mean: -0.7987 / Min: -0.8032 / Max: -0.7945
Measure Mean: -0.7603 / Min: -0.7603 / Max: -0.7603
Travel Mean: 0.0383 / Min: 0.0350 / Max: 0.0400
Calculated QGL Z-Offset: 0.077
20:10
Auto TAP sample 3
Traveled: 0.0350 from z-0.7945 to -0.7595 on step 7
20:10
Auto TAP sample 2
Traveled: 0.0400 from z-0.7982 to -0.7582 on step 8
20:10
Auto TAP sample 1
Traveled: 0.0400 from z-0.8032 to -0.7632 on step 8
20:10
Auto TAP performing 3 samples to calculate z-offset with QGL method
Probe Min: -2.5, Stop: 2.0, Step: 0.005
20:10
auto_tap

interesting topic: Saving z-Offset after Auto_tap and repeating auto_tap after Restart will result same values from above. This means z_offset would constantly "drift" in one direction.

## [probe]
## z_offset = -0.822

[Anonoei]

@renekar
The z-offset drift should be fixed in the latest version, since it zeros the offset and homes z now this commit
What version of tap are you using? (RC8, a CNC kit, etc)
From those results it looks like this might be part of issue 5

[renekar]

using a RC6, modified the printer.cfg acc the latest commit. Now, ending up on a flat surface (wanted to eliminate the specific squish at textured bed) with a z offset of +1.6 ... this is extruding in the air.

[lothos73]

I have a similar problem with CL CNC tap

Manually adjusted my offset was around -.495 or so give or take.

04:19:16 PM
SAVE_CONFIG
04:19:10 PM
probe: z_offset: -2.073
The SAVE_CONFIG command will update the printer config file
with the above and restart the printer.
04:19:10 PM
Z_OFFSET_APPLY_PROBE
04:18:28 PM
Auto TAP Results on CL_CNC using 'rev hop' method
Samples: 5, Total Steps: 78
Probe Mean: -0.9545 / Min: -0.9558 / Max: -0.9533
Measure Mean: -0.8765 / Min: -0.8765 / Max: -0.8765
Travel Mean: 0.0780 / Min: 0.0750 / Max: 0.0800
Calculated z-offset: 1.111
04:18:28 PM
Auto TAP sample 5
Traveled: 0.0800 from z-0.9545 to -0.8745 on step 16
04:18:17 PM
Auto TAP sample 4
Traveled: 0.0800 from z-0.9545 to -0.8745 on step 16
04:18:06 PM
Auto TAP sample 3
Traveled: 0.0800 from z-0.9558 to -0.8758 on step 16
04:17:55 PM
Auto TAP sample 2
Traveled: 0.0750 from z-0.9533 to -0.8783 on step 15
04:17:44 PM
Auto TAP sample 1
Traveled: 0.0750 from z-0.9545 to -0.8795 on step 15
04:17:28 PM
Auto TAP performing 5 samples to calculate z-offset on CL_CNC tap using 'rev hop' method
Probe Min: -2.0, Stop: 2.0, Step: 0.005
04:17:28 PM
auto_tap