Jamming at the Y

It's all the G0 E statements... They add up to the total distances. I have comments in the code to show you where.

Bill

Let me rephrase the question differently.

1. I don't need to generate code - correct?

2. Replace any existing generated code for MK3 with the new code you posted, correct?

3. Edit the lines you've indicated:

A. G0 X220 Y209 F2000 ; <<----- EDIT THIS LINE TO SET THE INITIAL LOCATION OF THE BUTTON

My button is at Y214.2, so I need to change Y to be Y214.2 instead of X209, correct?

B. G0 E25 F2000 ; <<<<<----------- EDIT THIS DISTANCE TO FINE TUNE THE FILAMENT LOADING TO STOP BLOBBING OR UNDEREXTRUSION

The distance from the center of the extruder to the tip of the nozzle is 745mm (I shortened the tubes).

So for the commented code above, is E25 to be changed to E745?

It is not clear what you meant by It's all the G0 E statements... They add up to the total distances.  I have comments in the code to show you where.

Where "they add up to the total distances", is that inclusive of these lines below, which should add up to the 745mm that I've measured? - I'm beyond confused at this point.

G0 E10 F4000 <<<<----This moves extruder 10mm, at feedrate of 4000

G0 E90 F10000 <<<<----This moves extruder 90mm, at feedrate of 10000

G0 E100 F10000 <<<<----This moves extruder 100mm, at feedrate of 10000

G0 E25 F2000 ; <<<<<----------- EDIT THIS

The total of these 4 lines is 225mm. So if I need to move 745mm, I would subtract 200mm, for the first three lines from 745mm, and change the fourth line to be 545mm?

Trent

Yes... I designed the 3DClippy specifically to eliminate the need for tip shaping and tuning... It works great.

As for the tubes... The shorter the tubes are, the better, as you're eliminating friction in the system. That's always a good thing. However, you need them long enough for full travel without kinking the tubes by bending them too sharp. The GCode generator will adjust the GCode... You just need to tell it the distances.

Ah, yes. So the distance that needs to be measured is the tip to the extruder, just like it is done when using the printer’s extruder.

At what distance did you place your switch on the Y axis - it looks like it is mounted on the rail, so less that 230mm?

My guess is that Octoprint isn't configured for 4 extruders. In the firmware, they'll ignore the T commands if they're not supported... And since we don't use it, my guess is the slicer is injecting them and Octoprint reporting about them. I'd say you can safely ignore them or just try to remove them from the GCode.

Apologies for the necro, but I found the fix for that error message, and I want to put it here in case anyone stumbles across this in the future. You need to configure octoprint like so:

settings > printer > printer profiles > edit profile > hotend & extruder. Set it to 4 extruders and check the 'shared nozzle' checkbox.

Note I'm using UI customizer so the path to the settings might be slightly different, but the process should be more or less the same.

I’ve watched that at least a dozen times - hoping to get some idea of how it might be aligned. But I think putting the base on the mill and taking a bit off at a time will be a quick solution.

I milled off about 1.5mm and got it to align correctly. Assuming next steps are to get the 1.) Y Tube connected, and measured for tube length from hot end nozzle to the extruder, 2.) Generate new g-code with the measurement and update Prusa. 3.) test?

For the system to cut the filament, is there a code change/update, or is that going to be a manual process?

Thanks again for your responsiveness and willingness to help troubleshoot and identify issues.

Trent

Ok... here is my tool change gcode (NOTE: it has not been optimized for filament... only 3DClippy functionality... you'll need to tune the load and unload distances to match your setup.) Bill ----------- TOOL CHANGE GCODE BELOW ------------ ; 3DChameleon Tool Change GCode for PrusaSlicer - with 3DClippy

; retract now to the cutting point to avoid ooze

G0 E-20 F10000;

; - 3D Chameleon Tool T{next_extruder} -

;begin switch from extruder {previous_extruder} to extruder #{next_extruder}

M117 Unloading Tool T[previous_extruder]

; unload extruder {previous_extruder}

; go to holding position to unload the stock extruder

G0 X220 Y209 F2000 ;   <<-----  EDIT THIS LINE TO SET THE INITIAL LOCATION OF THE BUTTON

G91 ; set motions to relative for the button presses

M92 X8; set x steps per mm to a small value (very high torque)

G92 X0 ; set to 0 so we have a lot of room to travel

; cut off the filament tip

G0 X310 F10000 ; quickly cut the filament strings off

G0 X-310 F10000 ; ok... go back to normal position

M92 X80; restore x steps per mm to normal value

G92 X220 ; restore original position

G0 E-2 F2000 ; pull filament off blade (this will pull off the tip if it didn't cut all the way through)

G0 Y-10 F2000; move away from clips

G28 X; home the x axis to reset the position

G0 Z-4.4 ; <--- Edit this to restore proper Z height if using stock V2 Firmware - 5mm - 2x layer height

G0 X0;

G0 Y10 F2000

; push off tip into ptfe tube

G0 E5 F10000

G0 E-7 F10000

; retract it back out of the extruder

G0 E-100 F10000

G0 E-65 F10000 ; total backout of 250mm

; ok - out of extruder - press button to remove it all the way

; load extruder #{next_extruder}

M117 Loading Tool T{next_extruder}

; always reset to extruder 0

G0 Y3 F2000 ; press the button

G4 P400 ; dwell for 1.3 seconds

; press the button for each extruder (1,2,3)

{if next_extruder>0}

G4 P400 ; dwell for .3 seconds

{endif}

{if next_extruder>1}

G4 P400 ; dwell for .3 seconds

{endif}

{if next_extruder>2}

G4 P400 ; dwell for .3 seconds

{endif}

G0 Y-3 ; back off the button

G4 S1 ; wait for it to happen

; - 3DC Process Tool {next_extruder} -

G90 ; set motions back to absolute

M83 ; but make sure extruder is still relative

G92 E0

G0 E10 F4000

G0 E90 F10000

G0 E100 F10000

G0 E25 F2000 ; <<<<<----------- EDIT THIS DISTANCE TO FINE TUNE THE FILAMENT LOADING TO STOP BLOBBING OR UNDEREXTRUSION

G92 E0

M117 3D Chameleon Tool T{next_extruder}