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coil-holder.scad
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coil-holder.scad
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include <MCAD/constants.scad>;
rm_height = 20;
rm_diameter = 6;
base_height = 20;
base_diameter = 25;
base_radius = base_diameter/2;
hole_diameter = 2;
hole_radius = (hole_diameter/2);
hole_depth = 10;
pin_position = [ [ -0.25 * mm_per_inch, -0.25 * mm_per_inch, base_height - hole_depth] ,
[ -0.25 * mm_per_inch, 0.25 * mm_per_inch, base_height - hole_depth] ,
[ -0.15 * mm_per_inch, 0.25 * mm_per_inch, base_height - hole_depth] ,
[ -0.25 * mm_per_inch, 0.15 * mm_per_inch, base_height - hole_depth] ,
[ 0.25 * mm_per_inch, -0.25 * mm_per_inch, base_height - hole_depth] ,
[ 0.15 * mm_per_inch, -0.25 * mm_per_inch, base_height - hole_depth] ,
[ 0.25 * mm_per_inch, -0.15 * mm_per_inch, base_height - hole_depth] ,
[ 0.25 * mm_per_inch, 0.25 * mm_per_inch, base_height - hole_depth] ];
belt_radius = 1;
magnet_radius = 1.5;
magnet_depth = 1;
$fn=50;
union() {
//peg
cylinder(h = rm_height, r=(rm_diameter)/2);
translate([0,0,-rm_height]) {
difference() {
// main body
cylinder(h = base_height, r=base_radius);
// belt channel
rotate_extrude() translate([base_diameter/2, base_height/4, 0]) circle(belt_radius);
// axis hole
cylinder(h = base_height/2, r = 1, $fn=20);
//magnets
for( i = [1:4] ) {
rotate([0,0,90*i]) translate([base_radius-magnet_depth,0,base_height/2]) {
rotate([0,90,0]) cylinder(h=magnet_depth,r=magnet_radius);
}
}
// coil former holes
for( i = [0:len(pin_position)-1] ) {
translate(pin_position[i]) {
cylinder(h = base_height, r = hole_radius);
}
}
}
}
}