@calvinx said in Mid air printinting:

I have a Chiron with a Duet and I suffered this problem of "air printing" when using simplify3d, prusa slicer was worse.

I cured my problem by playing with the homing files and setting up the Z probe properly. I initially cheated and used the rep rap config tool but that didnt generate what I needed properly.

see my files for what im using with success.

Any other help I can be just ask.

DISCLAIMER.

This setup WORKS FOR ME, it may not be the right or wrong way to do things, But on my Anycubic Chiron with a Duet and a titan/E3D V6 it works for me.

Chiron Config G.txt

Chiron Home All.txt

Chiron Home Z.txt

Chiron Home Y.txt

Chiron Home X.txt

Chiron Bed G.txt

Oh and I was getting Z banding artifacts showing up in my prints so I popped out the top bearings this got rid of the banding.

It doesn't give problems on tall prints because you removed the Z bearings? Nice setup by the way!

Ok, thank you. Looking over your config file I've seen you have the Z axis minimum -1 and that made me curious, checked mine and I had it set to 2.25 so voila there has my offset I was getting in the slicer, I changed it to 0 and now it works as it should.
Thank you guys, for all your help

There are no offsets on the gcode tab and I copied the start of a gcode file

0_1566220035022_New Text Document.gcode

I've done that and on Duet Web Control it works as intended, if I send a G1 Z0 command it lowers the nozzle to the right distance but only when I'm trying to print it stays in the air.

Thank you, removing G92 Z=0 fixed the map offset from mesh grid but in Simplify 3d it's still printing in mid-air and does not aloud me to lower the nozzle below the probe trigger high. In Simplify 3d on scripts, I'm only using is G28 and G29 S1.

Hi, I discovered the 3d printing about 6 months ago and till 2-3 weeks ago I didn't know much about G codes, I own an Anycubic Chiron and decided to upgrade and went for a Duet2Wifi. all good so far, everything went well at cold but when I tried to print the first time the nozzle stays in the air about 1.5 mm above the bed, even if I lower the nozzle from the browser with baby steps it goes down but at the first next move the IR probe (IR DC42) goes in and lift the nozzle again.
I'm using simplify3d and I tried so far to add G91, G90, M564 H0 inside the slicer to get over the end-switch limits but nothing helps. When I do the G32 on duet web I get a warning about the offset and on the visual map, the mesh is much lower than the bed.
Here are my configuration files, any help is much appreciated

0_1566145419093_config.g
0_1566145429888_homez.g
0_1566145439342_homeall.g
0_1566145442786_bed.g

Thank you