62 lines
1.6 KiB
OpenSCAD
62 lines
1.6 KiB
OpenSCAD
// Calibration test tower
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//
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// Generate STL using OpenSCAD:
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// openscad square_tower.scad -o square_tower.stl
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square_width = 5;
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square_size = 60;
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square_height = 50;
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antiwarp_height = .8;
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antiwarp_radius = 5;
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CUT = 0.01;
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module notch(x, y, rot) {
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depth = .5;
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width = 1;
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translate([x, y, 0])
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rotate([0, 0, rot])
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translate([-depth, -width, -CUT])
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cube([2*depth, 2*width, square_height + 2*CUT]);
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}
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module square_with_notches() {
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difference() {
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// Start with initial square
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cube([square_size, square_size, square_height]);
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// Remove four notches on inside perimeter
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notch(square_width, square_size/2 - 4, 0);
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notch(square_size - square_width, square_size/2, 0);
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notch(square_size/2, square_width, 90);
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notch(square_size/2, square_size - square_width, 90);
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}
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}
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module anti_warp_feet() {
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module anti_warp_cylinder() {
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cylinder(r=antiwarp_radius, h=antiwarp_height, $fs=.5);
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}
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dist = antiwarp_radius / 2.5;
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translate([dist, dist, 0])
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anti_warp_cylinder();
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translate([square_size-dist, dist, 0])
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anti_warp_cylinder();
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translate([dist, square_size-dist, 0])
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anti_warp_cylinder();
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translate([square_size-dist, square_size-dist, 0])
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anti_warp_cylinder();
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}
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module hollow_square() {
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difference() {
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union() {
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square_with_notches();
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anti_warp_feet();
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}
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translate([square_width, square_width, -CUT])
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cube([square_size-2*square_width, square_size-2*square_width,
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square_height + 2*CUT]);
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}
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}
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hollow_square();
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