Very very weird issue, looks like z wobble, but....

Phaedrux

HAha, that's my understanding, but now I'm confused in my own head.

It would be easy enough to verify at the printer.

iamthebest22

xD, well I'm doing the big circle 200mm dia, but just at 0.4mm due to the stupid issue print right now for the z wobble, I'll be running a probe repeatability test tomorrow, then I'll know for sure xD

iamthebest22

Did the probe test, here's the results, right now I'm 6mm/s for the bed, is this result good enough, or should I slow the bed a little more?

G32 bed probe heights: 0.006 0.002 -0.003 -0.001 -0.001 0.004 -0.003 -0.003 -0.004 0.001, mean -0.000, deviation from mean 0.003

Phaedrux

With a contact probe like the piezo I think you want some speed for the probe so that it has a good distinct trigger. Going too slow can cause problems.

iamthebest22

oh cause I was at 8mm/s and people said that's too fast. hmm okay, but are my current results good?

Phaedrux

Yes they seem to be pretty good. You can enforce a higher tolerance with the A and S parameters for M558.
https://duet3d.dozuki.com/Wiki/Gcode#Section_M558_Set_Z_probe_type

The A and S parameters control multiple probing. Probing is repeated until two consecutive probe attempts produce results that differ by no more than the S parameter; then the average of those two results is used. However, if the number of attempts specified by the A parameter is reached without getting two consecutive results within tolerance of each other, no further probe attempts are made and the average result of all the attempts is used.

iamthebest22

ah okay good to hear, Btw my 0.4mm layer height 250mm circle produced no wobble, so I guess I'm good? Though I still need to figure out what the heck is going on with 0.3mm height underextruding...

iamthebest22

Haven't had time to solve it, but I got a weird issue still as before. So it looks like my Skirt seems to be printing higher than the actual part itself. now since it's a skirt, that doesn't matter, but I'm wondering why that's the case. What's more interesting is this, in the file information under print status. it says this:

Size:
437.0 KiB
Object Height:
0.5 mm
Layer Height:
0.3 mm / 0.4 mm
Filament Usage:
7007.7 mm
Generated by:
Slic3r Prusa Edition 1.41.2+win64 on 2019-04-13 at

Object height says it's 0.5mm, but in the slicer, I clearly set the bed layer test to 0.4mm thickness, is it a bug and maybe that's causing it? Should I upgrade to the newest Slic3r PE 1.42.0 Beta 1?

Phaedrux

@iamthebest22 can you post that gcode file?

iamthebest22

here it is:

https://www.dropbox.com/s/45rb37he3r9qxig/More detail 1st Layer test for Bigger Beds.gcode?dl=0

Maybe I should switch to Simplify3D

iamthebest22

this is what's happening right now, I know it looks like too close to bed, but the problem is if I lift it higher, the skirt would just go everywhere.
https://www.dropbox.com/s/7h1kpczw22qx8c8/2019-04-13 16.55.37.jpg?dl=0
https://www.dropbox.com/s/9zt7h61nfhhuiqx/2019-04-13 16.55.40.jpg?dl=0