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;<<< Start Of Tip Shaping- Remove If No Cutter! >>>
In Support
Filament always backs out when starting a print
In Getting Started
Filament always backs out when starting a print
In Getting Started
curtiskam
Sep 25, 2024
Here&#39;s what I have for my start/Tool Change/end code now. It still hasn&#39;t resolved the issue. I hear it pulsing 8 times when it should be 7, after that I eventually get an unknown command T0 probably in my tool change code My Start Code: G90 ; use absolute coordinates M83 ; extruder relative mode M104 S150 ; set temporary nozzle temp to prevent oozing during homing and auto bed leveling M140 S{first_layer_bed_temperature[0]} ; set final bed temp G4 S30 ; allow partial nozzle warmup G28 ; home all axis G29 ; auto bed levelling G1 Z50 F240 G1 X2.0 Y10 F3000 M104 S{first_layer_temperature[0]} ; set final nozzle temp M190 S{first_layer_bed_temperature[0]} ; wait for bed temp to stabilize M109 S{first_layer_temperature[0]} ; wait for nozzle temp to stabilize ;G1 Z0.28 F240 G0 Y220 F2000 ; press button G4 P3500 ; wait for 7 pulses G0 Y217 F2000 ; unpress button G4 P2000 ; wait for it to home Tool Change Code: M83 ; turn relative distances for the extruder ; unload extruder {previous_extruder} G92 E0 ; go to holding position to unload the stock extruder G0 Y217 F2000 ; &lt;&lt;----- EDIT THIS LINE TO SET THE INITIAL LOCATION OF THE BUTTON ; if this is the first load, then don&#39;t unload G91 ; move to relative mode M83 ; load extruder #{next_extruder} M117 Loading Tool T{next_extruder} {if previous_extruder&gt;-1} ; back out the filament for cutting G0 E-20 F500 ; retract a bit, adjust this to tune waste ; &lt;&lt;&lt;&lt; insert mechanical cutter code here! &gt;&gt;&gt;&gt; ;&lt;&lt;&lt; Start Of Tip Shaping- Remove If No Cutter! &gt;&gt;&gt; M109 R180; cool down to prevent swelling ;M302 S0 ; enable cold extrusion M106 S255 G0 E20 F1500 ; G0 E-5 F500 ; M109 R165; cool down to prevent swelling G0 E5 F1500 ; G0 E-1 F500 ; M109 R155; cool down to prevent swelling G0 E1 F1500 ; G0 E-25 F500 ; M109 R150; cool down to prevent swelling G0 E24 F1500 ; last tip dip with cold tip G0 E-24 ; last tip dip with cold tip M109 R180; ok... go back up in temp so we can move the extruder G0 E-80 F500 ; back out of the extruder G92 E0 M104 S[temperature]; ;&lt;&lt;&lt; End Of Tip Shaping &gt;&gt;&gt; ; we skipped to here if it was extruder -1 {endif} {if previous_extruder&gt;-1} ; 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-40 F2000 G92 E0 G0 E-30 F2000 ; &lt;&lt;&lt;---- if mechanical cutter, change to a positive value of at least 5mm G92 E0 ; ok - out of extruder - press button to remove it all the way G91 ; move to relative mode M82 ; we skipped to here if it was extruder -1 {endif} ; press the button to select the new extruder G0 Y3 F2000 {if next_extruder&#61;&#61;0} G4 P500 ; dwell for .5 seconds - adjust this to match your machines single pulse time {endif} {if next_extruder&#61;&#61;1} G4 P1000 ; dwell for 1.0 seconds - adjust this to match your machines two pulse time {endif} {if next_extruder&#61;&#61;2} G4 P1500 ; dwell for 1.5 seconds - adjust this to match your machines three pulse time {endif} {if next_extruder&#61;&#61;3} G4 P2000 ; dwell for 2.0 seconds - adjust this to match your machines four pulse time {endif} G0 Y-3 G4 P2000 ; wait for cutter to work ; ok command selected - back out filament if needed after cut {if previous_extruder&gt;-1} G0 Y3 F2000 ; G4 P4500 ; G0 Y-3; G4 P400 {endif} G0 Y3 F2000 ; G4 P4500 ; G0 E25 F1500; &lt;&lt;&lt;--- adjust this E value to tune extruder loading 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 ; &lt;&lt;&lt;&lt;&lt;----------- EDIT THIS DISTANCE TO FINE TUNE THE FILAMENT LOADING TO STOP BLOBBING OR UNDEREXTRUSION G92 E0 M83 ; turn relative distances for the extruder ;M302 S180 ; prevent cold extrusion M117 3D Chameleon Tool T{next_extruder} End Code: G92 E0 G0 E-2 F2400; retract to prevent blobbing G92 E0 ; go to holding position to unload the stock extruder G0 X210 Y217 F10000 ; &lt;&lt;----- EDIT THIS LINE TO SET THE INITIAL LOCATION OF THE BUTTON G91 ; move to relative mode M83 ; ; add tip shaping here G92 E0; ; back out the filament G0 E-25 F500 ; retract a bit, adjust this to tune waste ; &lt;&lt;&lt;&lt; insert mechanical cutter code here instead if you have one! &gt;&gt;&gt;&gt; G0 E25 F1500 ; G0 E-5 F500 ; G0 E5 F1500 ; G0 E-1 F500 ; G0 E1 F1500 ; G0 E-25 F500 ; M106 S255 M109 S180; cool down to prevent swelling G0 E24 F1500 ; last tip dip with cold tip G0 E-24 F500 ; last tip dip with cold tip M109 S150; cool down to prevent swelling M109 S180; ok... go back up in temp so we can move the extruder G0 E-100 F1500 ; back out of the extruder G92 E0 G0 E-100 F1500 ; back out of the extruder G92 E0 M107 ; G92 E0 G0 Y3 F2000 G0 E-75 F1500 ; continue to back out of the extruder G4 P13000 G0 Y-3 G4 P400 G90 M83 END_PRINT {if max_layer_z &lt; max_print_height}G1 Z{z_offset&#43;min(max_layer_z&#43;2, max_print_height)} F600 ; Move print head up{endif} G1 X5 Y{150} ; present print {if max_layer_z &lt; max_print_height-10}G1 Z{z_offset&#43;min(max_layer_z&#43;70, max_print_height-10)} F600 ; Move print head further up{endif} {if max_layer_z &lt; max_print_height*0.6}G1 Z{max_print_height*0.6} F600 ; Move print head further up{endif} M140 S0 ; turn off heatbed M104 S0 ; turn off temperature M107 ; turn off fan M84 X Y E ; disable motors

curtiskam

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