Speed issue with Slic3r and Marlin


I am trying to print with clay.

These are my Slic3r speed settings,

Slic3r speed settings

Other information;

  • Nozzle: 1.4 mm
  • First layer height: 0.9 mm
  • layer height: 1 mm
  • Filament dia: 1.8 mm
  • perimeter: 3

When I print, the first layer is printed faster than remaining layers and in the remaining layers, the two inner perimeters are printed much slower than the outer perimeter.

Isn't this strange since I give the same print speed for all?


Posted 2018-12-05T16:13:32.183

Reputation: 643

My impression was that clay requires a much larger nozzle. Do you really mean clay as in riverbed sediment? – Carl Witthoft – 2018-12-06T14:35:22.790

can you please turn your gcode into plain .txt by just changing the file type? – Trish – 2019-01-06T15:16:38.463



No, you did not set all the settings to the same speed, there are 2 different print speeds defined:

  • Infill Solid: 60 mm/s
  • First Layer Speed: 30%

This means, that some walls will be printed 10 mm/s faster than the others, and that first layer should be printed at 30% of 50 mm/s, so at 15 mm/s - try to define it as a speed. Make sure to save and apply the settings and only then slice your model, as you might have sliced the model with the previous settings.


Posted 2018-12-05T16:13:32.183

Reputation: 15 633


Make sure that on the Print Settings tab, under Advanced, you have set the Extrusion widths for your custom nozzle settings.

Marcus Adams

Posted 2018-12-05T16:13:32.183

Reputation: 143