Linear advance 1.5
Hi everyone,
I was very happy to see the new firmware update, but I was a little confused about the optimal settings for Linear Advance 1.5.
Currently I use `M900 K30` for PLA and `M900 K45` for PETG. (Using Simplify3D.) I understand that the new change is backward compatible and that's good. But assuming I want to take advantage of the new Linear Advance 1.5 feature. What would you recommend as thew new M900 lines to use?
Thanks for your help,
Ram Rachum.
RE: Linear advance 1.5
iirc 30 equates to 0.6 on the new profiles for PLA. Not sure about PETG. You could run the linear K test from Marlin to see whats actually best for that particular filament/printer combo and set the filament profile to contain the optimised value.
RE: Linear advance 1.5
Definitely best to calibrate it per-filament, but PETG values will be 0.08-0.12
Edit: Also, PLA is 0.06, not 0.6 if memory serves.
RE: Linear advance 1.5
@vintagepc
So that would mean a line like M900 K0.1 ?
RE: Linear advance 1.5
Why don't you simply use the expression from the current Prusa PLA profiles?
M900 K{
if printer_notes=~/.*PRINTER_MODEL_MINI.*/ and nozzle_diameter[0]==0.6}0.12{
elsif printer_notes=~/.*PRINTER_MODEL_MINI.*/}0.2{
elsif nozzle_diameter[0]==0.6}0.04{
else}0.06{endif} ; Filament gcode LA 1.5
{if printer_notes=~/.*PRINTER_MODEL_MINI.*/};{elsif printer_notes=~/.*PRINTER_HAS_BOWDEN.*/}M900 K200{
elsif nozzle_diameter[0]==0.6}M900 K18{
else}M900 K30{endif} ; Filament gcode LA 1.0
RE: Linear advance 1.5
Definitely best to calibrate it per-filament, but PETG values will be 0.08-0.12
Edit: Also, PLA is 0.06, not 0.6 if memory serves.
Sorry, damn memory - getting old 🙂 I was only out by a decimal place lol.
RE: Linear advance 1.5
Thank you!