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Hello1024/spiral_outer.py

Created December 8, 2021 16:18
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  1. Hello1024 created this gist Dec 8, 2021.
    98 changes: 98 additions & 0 deletions spiral_outer.py
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,98 @@
    #!/bin/env python

    from pygcode import *
    import pygcode
    import math

    prefix = """
    M82 ;absolute extrusion mode
    M140 S60 ; set bed temperature to 55 C and continue
    M104 S200 ; set hot end temperature to 210 C and continue
    M190 S60 ; wait for bed temperature to reach 55 C
    M109 S200 ; wait for hot end temperature to reach 210 CG21 ;metric values
    G90 ;absolute positioning
    M82 ;set extruder to absolute mode
    M107 ;start with the fan off
    G28 X0 Y0 ;move X/Y to min endstops
    G28 Z0 ;move Z to min endstops
    G1 Z35.0 F1800 ;move the platform down 15mm
    G92 E0 ;zero the extruded length
    G1 F400 X50 E6 ;extrude 6mm of feed stock while moving in x
    G92 E0 ;zero the extruded length again
    G1 F1800
    G92 E0
    G10
    M107
    G0 F1800 X100 Y100 Z0.2
    G11
    """

    suffix = """
    M104 S0 ;extruder heater off
    M140 S0 ;heated bed heater off (if you have it)
    G91 ;relative positioning
    G1 E-1 F300 ;retract the filament a bit before lifting the nozzle, to release some of the pressure
    G1 Z+0.5 E-5 X-20 Y-20 F30 ;move Z up a bit and retract filament even more
    G28 X0 Y0 ;move X/Y to min endstops, so the head is out of the way
    M84 ;steppers off
    G90 ;absolute positioning
    M82 ;absolute extrusion mode
    """


    for cls in pygcode.gcodes._subclasses(pygcode.GCodeMotion):
    cls.param_letters.add('E')


    line_width=0.60
    first_layer_height=0.2
    layer_height=0.06

    radius = 25
    height = 10

    E=0
    Z=0
    layer=0

    print(prefix)
    print("G1 F900")

    while True:
    local_layer_height = layer_height

    # Uncomment to make a cone.
    #radius=radius-layer_height*2

    if radius<line_width or layer*layer_height>height:
    break

    # outline - goes around 2x
    for angle in [x / 200.0 for x in range(0, 400)]:
    local_radius = radius-abs(1-angle) * line_width
    move_distance = 2*math.pi*local_radius/200


    if layer==0:
    local_layer_height = first_layer_height+(angle/2.0)*layer_height
    Z = (layer+angle/2.0)*layer_height+first_layer_height

    E += move_distance*local_layer_height*line_width / (math.pi*(1.75/2)**2)

    print("%s" % GCodeLinearMove(X=100+math.sin(angle*2*math.pi)*local_radius,Y=100+math.cos(angle*2*math.pi)*local_radius,Z=Z, E=E))

    # example infill
    for angle in [x / 4.0 for x in range(1, 5)]:
    local_radius = radius-line_width
    move_distance = 2*math.pi*local_radius/4


    E += move_distance*local_layer_height*line_width / (math.pi*(1.75/2)**2)

    print("%s" % GCodeLinearMove(X=100+math.sin(angle*2*math.pi)*local_radius,Y=100+math.cos(angle*2*math.pi)*local_radius,Z=Z, E=E))
    print("M106 S255") # Fan on
    line_width=0.30
    layer += 1
    print("G1 F1800")

    print(suffix)