OpenSCAD Designs

Wikibooks: OpenSCAD User Manual

Doughnut shape

rotate_extrude(convexity=10,$fn=100)

translate([2,0,0])

circle(r=1,$fn=100);

Sample Bridge

difference() {

cube(size =[12,21,2],center=true);

translate ([0,0,1])

cube(size =[10,21,2],center=true);

}

union(){

translate ([4.5,9,-3.5])

cylinder(h=5, r=1, center=true, $fn=100);

translate ([-4.5,9,-3.5])

cylinder(h=5, r=1, center=true, $fn=100);

translate ([-5.5,9,-2])

rotate ([90,0,90]) cylinder (r=1, h=11,$fn=100);

}

union(){

translate ([4.5,-9,-3.5])

cylinder(h=5, r=1, center=true, $fn=100);

translate ([-4.5,-9,-3.5])

cylinder(h=5, r=1, center=true, $fn=100);

translate ([-5.5,-9,-2])

rotate ([90,0,90]) cylinder (r=1, h=11,$fn=100);