Workshops/OpenSCAD

Hello World (a cube)

Make a solid

cube([10,20,30]);

• [ ] refers to cartesian coordinates
  • if you're doing X,Y,Z use []
    • for example:

cylinder(h=10,r=10);

• • • h and r are not cartesian coordinates. Do not use [ ] around them.

Apply a transformation

translate([0,-10,0])
cube([10,20,5]);

• translate applies to cube because there is no ; at the end

Relate solids

difference() {
	translate([0,-10,0])
	cube([10,20,5]);
	cylinder(h=5,r=10);
}

• Press F6 to compile the drawing

Done!

• You made a drawing! Congrats, but you did it wrong. Lets improve thigns.

More Stuff

• Take any of these, and repeat the same steps for Hello World
  • Solids:

http://en.wikibooks.org/wiki/OpenSCAD_User_Manual/Primitive_Solids

• • Transformations:

http://en.wikibooks.org/wiki/OpenSCAD_User_Manual/Transformations

• • Relations: (CSG Modeling)

http://en.wikibooks.org/wiki/OpenSCAD_User_Manual/CSG_Modelling

• • Or, use this handy cheat sheet:

http://www.openscad.org/cheatsheet/

Variables

• Pretend we want to change the height of this halfpipe
  • Change cube z to 10

difference() {
        translate([0,-10,0])
        cube([10,20,10]);
        cylinder(h=5,r=10);
}

More Details on OpenSCAD

• Stacking translates
  • Translates can be stacked on top of each other

difference() {
        cylinder(h=5,r=10);
        translate([-3,-3,0])
        cube([6,6,20]);
}