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How to code for Auto Clippy

I am having trouble figuring out how to use the auto clippy on my Creality CR6se with the MK4 3C Chameleon. It may be due to my inexperience in Prusaslicer, but it seem that the code pulls the filament out of the extruder past the cutter before it cuts. That renders is useless for clipping the end off. If I move the extruder moves to after the button press for the tool change and wait for 2 sec the clippy does its job fine. But then the Chameleon locks its gears on the filament and when the extruder starts to unload it breaks the y-pipe. Does any one have a clear gcode that I can look at that uses the auto clippy? BTW I was able to print successfully without the clippy but had issues with the tip shaping that would jam up the tubes. Thanks in advance.

3 comments

3 Comments

Bill

Nov 15

You'd need to post your tool change gcode to understand what is happening. However, in general, it only cuts the filament once you press the button to select a new color. So, your tool change gcode should back out the filament to the proper cutting location prior to that first button press. Once you do that, if it needs to cut, it will, then you press it the second time for the filament to retract.

Bill

Steve Kosman

Nov 15

Replying to

I do back it out 20mm before I press the button to select new color.

Here is my gcode, It's not pretty...I've tried a lot of different things to get it to work. So any suggestions will be greatly appreciated!

; Auto generated 3D Chameleon Mk4 Tool Change GCode for PrusaSlicer

; My 1st modification

; - 3D Chameleon Mk4 Tool T{next_extruder} -

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

M117 Unloading Tool T[previous_extruder]

M83 ; turn relative distances for the extruder

; unload extruder {previous_extruder}

G92 E0

; go to holding position to unload the stock extruder

G0 Y232 F2000 ; <<----- EDIT THIS LINE TO SET THE INITIAL LOCATION OF THE BUTTON

; if this is the first load, then don't unload

G91 ; move to relative mode

M83

; load extruder #{next_extruder}

M117 Loading Tool T{next_extruder}

{if previous_extruder>-1}

; back out the filament for cutting

;G0 E-20 F3000 ; maybe add this later?

G0 E-20 F500 ; retract a bit, adjust this to tune waste

; <<<< insert mechanical cutter code here! >>>>

; we skipped to here if it was extruder -1

{endif}

{if previous_extruder>-1}

; retract it back out of the extruder

G91 ; move to relative mode

M82 ; E absolute

; we skipped to here if it was extruder -1

{endif}

; press the button to select the new extruder

G0 Y3 F2000

{if next_extruder==0}

G4 P500 ; dwell for .5 seconds - adjust this to match your machines single pulse time

{endif}

{if next_extruder==1}

G4 P1000 ; dwell for 1.0 seconds - adjust this to match your machines two pulse time

{endif}

{if next_extruder==2}

G4 P1500 ; dwell for 1.5 seconds - adjust this to match your machines three pulse time

{endif}

{if next_extruder==3}

G4 P2000 ; dwell for 2.0 seconds - adjust this to match your machines four pulse time

{endif}

G0 Y-3

G4 P2500 ; wait for cutter to work added 500

{if previous_extruder>-1}

; ok command selected - back out filament if needed after cut

; retract it back out of the extruder

G92 E0

G0 E-100 F2000

G92 E0

G0 E-100 F2000

G92 E0

G0 E-100 F2000

G92 E0

G0 E-100 F2000

G92 E0

G0 E-60 F2000

G92 E0

;G0 E5 F2000 ; <<<---- if mechanical cutter, change to a positive value of at least 5mm removed

; we skipped to here if it was extruder -1

{endif}

G92 E0

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

{if previous_extruder>-1}

G0 Y3 F2000 ;

G4 P6000 ;

G0 Y-3;

G4 P400

{endif}

G0 Y3 F2000 ;

G4 P5700 ; <-- reduced from 6000

G0 E50 F2260; <<<--- adjust this E value to tune extruder loading (maybe F2280) changed from 1500 to 2000

G0 Y-3;

G4 P400

G92 E0

G90 ; move back to absolute mode

M83 ; but make sure the extruder stays in relative

; reload filament all the way into extruder

G92 E0

G0 E100 F2000

G92 E0

G0 E100 F2000

G92 E0

G0 E100 F2000

G92 E0

G0 E100 F2000 ;

G92 E0

G0 E25 F2000 ; <<<<<----------- EDIT THIS DISTANCE TO FINE TUNE THE FILAMENT LOADING TO STOP BLOBBING OR UNDEREXTRUSION nb original is 35

G92 E0

M83 ; turn relative distances for the extruder

M302 S180 ; prevent cold extrusion

M117 3D Chameleon Tool T{next_extruder}

; ---- added section for prime line here -----

{if previous_extruder==-1}

; And we can now draw our purge line

; >>> CB prime <<<

;G0 X235 Y232 Z0.28 F1000

;G0 Y0 E40;

;G0 X234;

;G0 Y232 E40

; >>> end CB prime <<<

; ---- community firmware purge ---

G92 E0 ;Reset Extruder

G1 Z2.0 F3000 ;Move Z Axis up

G1 X0.0 Y200 Z0.28 F5000.0 ;Move to start position

G1 X0.2 Y200.0 Z0.28 F5000.0 ;Move to side a little

G1 X0.2 Y20.0 Z0.28 F1000.0 E30 ;Draw the first line -500 +15

G1 X0.5 Y20.0 Z0.28 F5000.0 ;Move to side a little

G1 X0.5 Y200 Z0.28 F1000.0 E50 ;Draw the second line -500 +20

G92 E0 ;Reset Extruder

G1 Z3.0 F3000 ;Move Z Axis up <<< I kept this

; --- end cfw purge ---

; --- adaptive purge ---

; adaptive purge horizontally to the lower left

;G92 E0.0 ; reset extruder

;G1 X{first_layer_print_min[0]} Y{first_layer_print_min[1]-10} Z0.8 F6000.0 ; position 10mm down from the lower left of the first layer

;G1 X{first_layer_print_min[0]+40} Y{first_layer_print_min[1]-10} E30 F360.0 ; extrude 30mm of filament in the x direction

;G92 E0.0 ; reset extruder

;G1 E-0.5 F2100 ; small retraction

;G1 X{first_layer_print_min[0]+50} F6000.0 ; move an additional 10mm without extruding

;G92 E0.0 ; reset extruder

; --- end adaptive purge ---

;original purge

;G0 X0 Y232 Z0.2 F1500

;G0 Y20 E50;

;G0 X0.3;

;G0 Y232 E50

G4 P2000 ; wait 2sec

{endif}

Steve Kosman

Nov 17

Replying to

I think I have it sorted out, I was thinking linerally thinking I had to do one thing after another. When I added my extruder unload commands at the same time I pressed the button to unload the Chameleon it worked great. Of course I matched my extruder rate to that of the Chameleon so they wouldn't fight. I will attach this new code to this note.

Thanks again for your support.

Steve

; Auto generated 3D Chameleon Mk4 Tool Change GCode for PrusaSlicer

; My 1st modification

; - 3D Chameleon Mk4 Tool T{next_extruder} -

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

M117 Unloading Tool T[previous_extruder]

M83 ; turn relative distances for the extruder

; unload extruder {previous_extruder}

G92 E0

; go to holding position to unload the stock extruder

G0 Y232 F2000 ; <<----- EDIT THIS LINE TO SET THE INITIAL LOCATION OF THE BUTTON

; if this is the first load, then don't unload

G91 ; move to relative mode

M83

; load extruder #{next_extruder}

M117 Loading Tool T{next_extruder}

{if previous_extruder>-1}

; back out the filament for cutting

;G0 E-20 F3000 ; maybe add this later?

G0 E-20 F500 ; retract a bit, adjust this to tune waste

; <<<< insert mechanical cutter code here! >>>>

; we skipped to here if it was extruder -1

{endif}

{if previous_extruder>-1}

; retract it back out of the extruder

G91 ; move to relative mode

M82 ; E absolute

; we skipped to here if it was extruder -1

{endif}

; press the button to select the new extruder

G0 Y3 F2000

{if next_extruder==0}

G4 P500 ; dwell for .5 seconds - adjust this to match your machines single pulse time

{endif}

{if next_extruder==1}

G4 P1000 ; dwell for 1.0 seconds - adjust this to match your machines two pulse time

{endif}

{if next_extruder==2}

G4 P1500 ; dwell for 1.5 seconds - adjust this to match your machines three pulse time

{endif}

{if next_extruder==3}

G4 P2000 ; dwell for 2.0 seconds - adjust this to match your machines four pulse time

{endif}

G0 Y-3

G4 P2500 ; wait for cutter to work added 500

{if previous_extruder>-1}

; ok command selected - back out filament if needed after cut

; retract it back out of the extruder

G92 E0

G0 Y3 F1000 ; start retracting 3DC at the same time pull out of Extruder

G0 E-100 F2260 ; match 3DC speed calculated at 2280 mm/min

G92 E0

G0 E-100 F2260

G92 E0

G0 E-100 F2260

G92 E0

G0 E-100 F2260

G92 E0

G0 E-60 F2260

G92 E0

;G0 E5 F2260 ; <<<---- if mechanical cutter, change to a positive value of at least 5mm removed

; we skipped to here if it was extruder -1

{endif}

G92 E0

{if previous_extruder>-1}

;G0 Y3 F2000 ; moved to before the extruder retraction

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

G4 P3660 ; reduced from 6000 pulled out too far by 60mm, reduce another 736 ms

G4 P

G0 Y-3;

G4 P400

{endif}

G0 Y3 F2000 ;

G4 P5700 ; <-- reduced from 6000

G0 E50 F2260; <<<--- adjust this E value to tune extruder loading (maybe F2280) changed from 1500 to 2000

G0 Y-3;

G4 P400

G92 E0

G90 ; move back to absolute mode

M83 ; but make sure the extruder stays in relative

; reload filament all the way into extruder

G92 E0

G0 E100 F2000

G92 E0

G0 E100 F2000

G92 E0

G0 E100 F2000

G92 E0

G0 E100 F2000 ;

G92 E0

G0 E15 F2000 ; <<<<<----------- EDIT THIS DISTANCE TO FINE TUNE THE FILAMENT LOADING TO STOP BLOBBING OR UNDEREXTRUSION nb original is 35 reduced from 25 to 20 to 10 to 15

G92 E0

M83 ; turn relative distances for the extruder

M302 S180 ; prevent cold extrusion

M117 3D Chameleon Tool T{next_extruder}

; ---- added section for prime line here -----

{if previous_extruder==-1}

; And we can now draw our purge line

; >>> CB prime <<<

;G0 X235 Y232 Z0.28 F1000

;G0 Y0 E40;

;G0 X234;

;G0 Y232 E40

; >>> end CB prime <<<

; ---- community firmware purge ---

G92 E0 ;Reset Extruder

G1 Z3.0 F3000 ;Move Z Axis up

G1 X0.0 Y200 Z0.28 F5000.0 ;Move to start position

G1 X0.0 Y200.0 Z0.28 F5000.0 ;Move to side a little

G1 X0.0 Y20.0 Z0.28 F1000.0 E30 ;Draw the first line -500 +15

G1 X0.5 Y20.0 Z0.28 F5000.0 ;Move to side a little

G1 X0.5 Y200 Z0.28 F1000.0 E30 ;Draw the second line -500 +20

G1 X1.0 Y200.0 Z0.28 F5000.0 ;Move to side a little

G1 X1.0 Y20.0 Z0.28 F1000.0 E30 ;Draw the third line added this for more purge

G92 E0 ;Reset Extruder

G1 X3 Z4.0 F3000 ;Move Z Axis up <<< I kept this

; --- end cfw purge ---

; --- adaptive purge ---

; adaptive purge horizontally to the lower left

;G92 E0.0 ; reset extruder

;G1 X{first_layer_print_min[0]} Y{first_layer_print_min[1]-10} Z0.8 F6000.0 ; position 10mm down from the lower left of the first layer

;G1 X{first_layer_print_min[0]+40} Y{first_layer_print_min[1]-10} E30 F360.0 ; extrude 30mm of filament in the x direction

;G92 E0.0 ; reset extruder

;G1 E-0.5 F2100 ; small retraction

;G1 X{first_layer_print_min[0]+50} F6000.0 ; move an additional 10mm without extruding

;G92 E0.0 ; reset extruder

; --- end adaptive purge ---

;original purge

;G0 X0 Y232 Z0.2 F1500

;G0 Y20 E50;

;G0 X0.3;

;G0 Y232 E50

G4 P2000 ; wait 2sec

{endif}.