Under extrusion on small cylinders with possible fix.

[arrbs]

Hi there, First of all thank you very much for the profiles for the ender 3. I'm getting the best prints I've ever had with your profiles.

I ran into an issue where the whole print would work beautifully until I got to a small cylinder/chimney shape. The printer would under-extrude badly for that shape resulting in a failure. The same file would print fine when sliced with Cura.

Pictures

The solution I found was to remove the following line from the start Gcode :

M221 S{if layer_height<0.075}100{else}95{endif}

It seems that the flow rate of 95 was just low enough to fail. A flow rate of 100 doesn't cause any problems with the print, so I haven't noticed a downside to removing it (yet).

Just wanted to share my finding. Thank you again!

[yarus23]

95 is too low for quality supports that are printed with higher speed. So 100% is the best value

[sn4k3]

95 was the best value i found after tune e-steps. Are your e-steps extruding 100mm out of 100mm? My ender3 come with esteps a bit off so i tunned first and 100% at slice gave me overextrusion, that's why i set it to 95. Please tell me about your e-steps value

[arrbs]

Please tell me about your e-steps value

Hi there, sure. My E-steps is at 100.4.

Thanks

[sn4k3]

Humm a bit higher then my was. My was 98 for get perfect 100mm out of 100mm PLA Thats the reason i keep telling people to fine tune start gcode, the printers always differ

[sn4k3]

Ajustment removed