[Cura retraction continuously increases exponentially during print]

Greg,

 

Wow! That is an immense amount of time you put in to help me out. Thank you so much for that. I will have a go at reformatting my SD card (thank God for the internet) and see if that works. I have plans to change the original board to the SKR Mini V2 some time this month, and I wondered if that may have some influence on this issue. 
Anyways, I’ll start with the SD card first and then let you know if it helps. Until then, take care and thank you again for your time and encouragement. 

[Cura retraction continuously increases exponentially during print]

I've uploaded a gcode file where this problem has most recently happened. I'm super new to coding in general, but as I look through the lines with a guide to explain specific gcode from the Marlin website at hand:), nothing seems to jump out at me.

 

Thanks for any help you can offer.

CE3_original_Filament_Guide_Roller.gcode

[Cura retraction continuously increases exponentially during print]

Hey there,

Thanks for responding. There is no M83 added to the start G code, however there is M82.

;Generated with Cura_SteamEngine 4.8.0
M140 S60
M105
M190 S60
M104 S210
M105
M109 S210
M82 ;absolute extrusion mode
; Ender 3 Custom Start G-code
G92 E0 ; Reset Extruder
G28 ; Home all axes
G1 Z2.0 F3000 ; Move Z Axis up little to prevent scratching of Heat Bed
G1 X0.1 Y20 Z0.3 F5000.0 ; Move to start position
G1 X0.1 Y200.0 Z0.3 F1500.0 E15 ; Draw the first line
G1 X0.4 Y200.0 Z0.3 F5000.0 ; Move to side a little
G1 X0.4 Y20 Z0.3 F1500.0 E30 ; Draw the second line
G92 E0 ; Reset Extruder
G1 Z2.0 F3000 ; Move Z Axis up little to prevent scratching of Heat Bed
G1 X5 Y20 Z0.3 F5000.0 ; Move over to prevent blob squish
M141 S28
G92 E0
G92 E0
G1 F2700 E-5
;LAYER_COUNT:100
;LAYER:0
M117 Layer 0 of 99 CE3_Filament Bearing Guide (Spacer)
M107
G0 F6000 X95.007 Y164.579 Z0.2
;TYPE:SKIRT
G1 F2700 E0
G1 F1200 X95.834 Y164.136 E0.0312

 

I have read in a separate that sometimes when using a USB or SD card, the slot where you insert the card can become filled with dust and cause an error in how the G code is interpreted. 

I have vacuumed the card reader slot but still have the same results. :(.

[Cura retraction continuously increases exponentially during print]

Hello there,

I too have just started seeing this happen with my Ender 3 in Cura 4.8. I have 'Enable Retraction' setting on so that it retracts 5mm but have 'Retract at Layer Change' off. At this setting, on only a select few prints, I am seeing the filament being retracted after each layer is complete. The first retraction seems to be the same as yours, about 100mm and then at each consecutive layer change the retraction distance increases to the point where the filament is eventually retracted completely out of the Bowden tube and Extruder. 

 

Have you managed to figure out what the issue is yet?

Thanks