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aeg-coffee-grinder-lid
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// body | |
top_width = 95; | |
bottom_width = 80; | |
total_length = 122; | |
depth = 11; | |
thickness = 1.5; | |
// bottom circle | |
bottom_radius = 60; | |
y_off_bot = sqrt(exp(ln(bottom_radius)*2) - exp(ln(bottom_width/2)*2)); | |
// top circle | |
top_radius = 120; | |
y_off_top = sqrt(exp(ln(top_radius)*2) - exp(ln(top_width/2)*2)); | |
module body() { | |
polygon(points=[ | |
[0+(top_width-bottom_width)/2, 0], | |
[top_width-(top_width-bottom_width)/2, 0], | |
[top_width, total_length], | |
[0, total_length]] | |
); | |
// bottom circle | |
translate([(top_width-bottom_width)/2,0,0]) | |
intersection() { | |
translate([0,-bottom_radius,0]) | |
square([bottom_width,bottom_radius]); | |
translate([bottom_width/2,y_off_bot,0]) | |
circle(r = bottom_radius, $fn = 100); | |
} | |
// top circle | |
translate([0,total_length,0]) { | |
intersection() { | |
translate([top_width/2,-y_off_top,0]) | |
circle(r = top_radius, $fn = 100); | |
square([top_width,top_width]); | |
} | |
} | |
} | |
module outer_shape() { | |
minkowski() { | |
body(); | |
circle(r = thickness, $fn = 100); | |
} | |
} | |
linear_extrude(height=thickness) { | |
outer_shape(); | |
} | |
linear_extrude(height=depth) { | |
difference() { | |
outer_shape(); | |
body(); | |
} | |
} |
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