ErikZalm/Marlin — Issue #48: arc look ahead from slic3r slow&jerky?
Author: jgeerds
Created: 2012-01-12 00:05:11+00:00
State: open

I am warming up to slic3r, and I posted the phenomenon in another bug, but I think it deserves it's own:
The arc look ahead in marlin produces pretty slow and jerky printing, compared to normal printing:
http://nypano.com/clients/UM/IMG_0339.MOV

This is the same duplo-brio file (a friend has a 2yo, and I am using it as a test print, since they are still more or less usable). the outline prints nice and fast, but the round interior pins (each about 10mm diameter), print very jerky, and have a lot of bumps/bleeds/droolblobs therefore.

slic3r settings:

bottom_layer_speed_ratio = 0.3
bridge_flow_ratio = 1
bridge_speed = 50
duplicate_distance = 6
duplicate_x = 1
duplicate_y = 1
end_gcode = M104 S0 ; turn off temperature\nG28 X0 ; home X axis\nM84 ; disable motors\nM107 ; turn fan off
extrusion_axis = E
extrusion_multiplier = 1
extrusion_width_ratio = 0
filament_diameter = 2.9
fill_angle = 45
fill_density = 0.25
fill_pattern = rectilinear
first_layer_height_ratio = 1
g0 = 0
gcode_arcs = 0
gcode_comments = 0
infill_every_layers = 2
infill_speed = 150
layer_height = 0.10125
nozzle_diameter = 0.5
perimeter_speed = 150
perimeters = 2
print_center = 100,100
retract_before_travel = 1
retract_length = 1
retract_lift = 0
retract_restart_extra = 0
retract_speed = 30
rotate = 0
scale = 1
skirt_distance = 6
skirt_height = 1
skirts = 1
small_perimeter_speed = 100
solid_fill_pattern = rectilinear
solid_infill_speed = 100
solid_layers = 3
start_gcode = G28 ; home all axes
temperature = 225
travel_speed = 300
use_relative_e_distances = 0
z_offset = 0