[Explanation of "end gcode" for Anet A8 - Cura 4.5]

I think I solved this with the help of another post and github

https://github.com/Ultimaker/Cura/blob/92691f68b6e969b07519a3dd91cff98796a765e4/resources/definitions/anet3d_a8.def.json

 

M104 S0
M140 S0
G92 E0            ; Zero the extruder position
G1 E-10 F2000     ; Retract 10mm instead of 80mm / Feed rate 2000
G28 X0 Y0
M84

 

[New Cura version has G92 extruder nonsense in "End G-Code"]

I had just asked about this I think shortly before yours in regard to the Anet A8 profile.

 

I went out to GitHub to look at the history on this:

 

https://github.com/Ultimaker/Cura/blob/92691f68b6e969b07519a3dd91cff98796a765e4/resources/definitions/anet3d_a8.def.json

 

Long and short of it there is a better setting:

M104 S0
M140 S0
G92 E0
G1 E-10 F2000
G28 X0 Y0
M84

So  - G92 E0 sets the extruder position to 0, then G1 E-10 F2000 runs an extrusion of -10mm and sets the feed rate to 2000.

 

I'm going to give this a wing and see what happens - I was NOT happy with the 80mm retract - pulled the filament out of the extruder throat and globbed it under the hobbed gear. Had to take the thing apart to clear it.

[Explanation of "end gcode" for Anet A8 - Cura 4.5]

I'm running into a slight issue with Cura 4.5's Anet A8 profile (thank you VERY much for including it)

 

So on print end - the following gcode is executed:

 

M104 S0
M140 S0
G92 E80
G1 E-80 F2000
G28 X0 Y0
M84

 

Cura 4.5 is a MARKED improvement over the previous 4.x releases. Application is very stable and starts reliably now. Upon finishing a print yesterday, I heard an interesting noise (not bad just unexpected) of the extruder retracting on completion.

 

Today I went to run a print and kicked it off. I look over after the print completed and noticed nothing had printed out at all. I figured my filament got stuck (not remembering hearing the retract). I tried pulling out the filament manually only to have it get stuck. I let everything cool down and unbolted the cooling fan on the extruder body. Sure enough, there was a nice glob at the end of the filament below the hobbed gear.

 

I think the retraction setting is a bit excessive.

 

Any suggestions to tune this?

 

Thanks in advance.