def model(self):
result = rounded_box(self.width,
self.width,
self.height,
r=(self.width - self.hole_spacing) / 2).t(
'c', 'c', -self.height)
result += scad.cylinder(d=self.ledge_diameter,
h=self.ledge_height + tol).tz(-tol)
result += (scad.cylinder(d=self.axel_diameter, h=self.axel_length) -
scad.cube(inf, inf, inf).t(
'c', self.axel_diameter / 2 - self.axel_chamfer, 'c'))
result -= scad.cylinder(d=self.screw.diameter, h=self.inf).t(
self.hole_spacing / 2, self.hole_spacing / 2,
-self.height / 2).mx(clone=True).my(clone=True)
return result.module_name('nema17')
def base_plate_with_holes():
size = 60
thickness = 3
hole_diameter = 10
hole_position = hole_diameter / 2 + thickness
# create plate
plate = scad.cube(size, size, thickness)
# hole
holes = scad.cylinder(d=hole_diameter, h=inf)
holes = holes.tz('c') # translate along Z to center of object
holes = holes.t(hole_position, hole_position, 0) # translate hole
holes = holes.mx(
plate.com.x,
clone=True) # mirror holes along x with center in plate.com
holes = holes.my(plate.com.y, clone=True)
# all transformations above can be written as single chain:
# holes = scad.cylinder(
# d=hole_diameter, h=inf
# ).t(
# hole_position, hole_position, 'c'
# ).mx(
# plate.com.x, clone=True
# ).my(
# plate.com.y, clone=True
# )
result = plate - holes
# or result = plate.difference(holes)
# or result = scad.difference(plate, holes)
return result
def hole(self,
h=inf,
inf_cap=False,
no_cap=False,
cap_type='hidden',
clearance=0):
if no_cap:
return scad.cylinder(d=self.diameter, h=h).tz(-tol)
if inf_cap:
result = scad.cylinder(d=self.cap_diameter, h=inf).mz().tz(tol)
else:
result = scad.cylinder(d=self.cap_diameter, h=tol * 2).tz(-tol)
if cap_type == 'hidden':
result += scad.cylinder(d1=self.cap_diameter,
d2=self.diameter,
h=self.cap_depth)
elif cap_type == 'cylinder':
result += scad.cylinder(d=self.cap_diameter, h=self.cap_depth)
result += scad.cylinder(d=self.diameter + clearance, h=h)
return result
def model(self):
result = scad.cylinder(d1=self.cap_diameter,
d2=self.diameter,
h=self.cap_depth)
result += scad.cylinder(d=self.diameter, h=self.length)
return result
def hole(self, h=inf):
result = scad.cylinder(d=self.external_diameter, h=h, fn=6)
return result
def model(self):
result = scad.cylinder(d=self.external_diameter, h=self.height, fn=6)
result -= scad.cylinder(d=self.internal_diameter,
h=self.height + tol * 2).tz(-tol)
return result
def holes(self, no_cap=False):
result = scad.cylinder(d=self.ledge_diameter, h=inf).tz(-tol)
result += self.screw.hole(no_cap=no_cap).t(
self.hole_spacing / 2,
self.hole_spacing / 2).mx(clone=True).my(clone=True)
return result
def nut(diameter=18, length=15, tol=0.01):
h = diameter * 0.4
solid = scad.cylinder(d=diameter * 1.9, h=h, fn=6)
solid -= m_thread_internal_hole(d=diameter, h=h + tol * 2).tz(-tol)
return solid
def bolt(diameter=18, length=20):
h = diameter * 0.4
solid = m_thread_external(d=diameter, h=length + h)
solid += scad.cylinder(d=diameter * 1.9, h=h, fn=6)
return solid