[Solved] Intro line printing off the plate  

RE: Intro line printing off the plate

Can you post your startup gcode? M206 should do the trick.

RE: Intro line printing off the plate

I'm also interested in this, I feel like my printer believes it's X axis is about 5mm to the left of where it actually is.

RE: Intro line printing off the plate

M862.3 P "[printer_model]" ; printer model check
G90 ; use absolute coordinates
M83 ; extruder relative mode
M104 S170 ; set extruder temp for bed leveling
M140 S[first_layer_bed_temperature] ; set bed temp
M109 R170 ; wait for bed leveling temp
M190 S[first_layer_bed_temperature] ; wait for bed temp
M204 T1250 ; set travel acceleration
G28 ; home all without mesh bed level
G29 ; mesh bed leveling 
M206 Y-5
M204 T[machine_max_acceleration_travel] ; restore travel acceleration
M104 S[first_layer_temperature] ; set extruder temp
G92 E0G1 Y-2 X179 F2400
G1 Z3 F720M109 S[first_layer_temperature] ; wait for extruder temp

; intro line
G1 X170 F1000G1 Z0.2 F720G1 X110 E8 F900G1 X40 E10 F700G92 E0

RE: Intro line printing off the plate

doesnt matter what value I use, the intro line keeps printing just about 1mm off the bed

RE: Intro line printing off the plate

G92 E0G1 Y-2 X179 F2400

This may be the culprit.

It should be 

G92 E0

G1 Y-2 X179 F2400

Without the G1 line, your nozzle never moves to the proper place.

RE: Intro line printing off the plate

sorry, that was my mistake. After pasting the code here, I had to move each command to a new line, and obviously missed that one.
In PrusaSlicer it is as you suggested.

G92 E0

G1 Y-2 X179 F2400

could that G1 Y-2 be that is countering my M206 tho?

RE: Intro line printing off the plate

ok, will do that when I get home, thanks

RE: Intro line printing off the plate

I changed that Y value from -2 to -5 .. still draws the line at the same place

RE: Intro line printing off the plate

Okay, time to post a 3mf project file. It contains all your settings so someone can do a test print to try and replicate the issue. 

In Prusaslicer, go to File/Save project as, to create the 3mf file. Zip compress it (right click Compress on Mac and Win11, right click Send to/Compress on Win10) to turn it into a .zip file, which you can attach to a post on this forum. The forum software does not accept .3mf files, it has to be a .zip file.

RE: Intro line printing off the plate

The picture shows the preview of the gcode, I have marked with the red line where about my intro line prints

RE: Intro line printing off the plate

gcode file

RE: Intro line printing off the plate

Hi, thanks but I have no desire to dig through gcode. Please post the 3mf project file as I described above, much easier to check on settings that way.

RE:

Of course I couldn't resist. I went into my own copy of Prusaslicer and lo and behold I can't see any changes either when I try to use M206 to adjust the printer's coordinate system. So maybe the Mini doesn't support M206. 

In any case, you should be able to accomplish what you're trying to do by simply changing 

G1 Y-2 X179 F2400

to something like

G1 Y-1 X179 F2400

You may have to play with the Y parameter to get it right but this works for me and should get your Y line back onto the steel sheet.

RE: Intro line printing off the plate

gosh, sorry, I was reading one thing, and did something completely opposite .. sorry about that

RE: Intro line printing off the plate

are you using Octoprint ? You have to specify a custom bounding box in Octoprint, I had a similar issue and that was something I had to change. See article below

https://help.prusa3d.com/article/octoprint-configuration-and-install_2182

RE: Intro line printing off the plate

@alter3go

When you do homing, is the print head positioned correctly?

Then you go to settings->move axis and elaborate with y. You will find the position, where you need to move y for intro line.

RE: Intro line printing off the plate

this fixed the issue, but I think the reason why initially there was no change, was because I was going Y-3/-4/-5 and so on, instead of changing the value positively.
from Y-2 to Y2 fixed the problem

RE: Intro line printing off the plate

Happy yo hear that you found the solution!

RE: Intro line printing off the plate

Thank you so much for this!  I had the same issue and after I changed the hotend to a Revo Micro yesterday, it’s off the front edge completely.  It was driving me crazy!  It does suck that I’ll have to re-slice a lot of files I already sliced on my Octopi but at least I have the solution!

Posted by: @alter3go

this fixed the issue, but I think the reason why initially there was no change, was because I was going Y-3/-4/-5 and so on, instead of changing the value positively.
from Y-2 to Y2 fixed the problem