3d printed laptop stand

01 Jun 2021

A a customizable laptop stand for 3d printing.

The stand

Design criteria. Mechanically sound, no screws, glue, moving parts and can hold heavy laptops. Easy to assemble and disassembled for transport.

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Source code on thingiverse here

Things I learned

How to do rounding easily is a common theme in openscad. I picked up a few new tricks.

1) padding using offset.

square([10,20]);
color("red") offset(r=-2) square([10,20]);

2) rounding by applying positive and negative offset

$fn=20;
offset(2) offset(-2) square([10,20]);

3) 90 degree rounding with boolean operators

intersection(){
  circle(r=10);
  square([10,10]);
}

difference(){
  square([10,10]);
  translate([10,10]) circle(r=10);
}

4) pyramids using intersection

intersection()
{
  linear_extrude(height=10)
    polygon([[0,0],[10,0], [8,10], [2,10]]);

  translate([0,0,10]) rotate([0,90,0])
  linear_extrude(height=10)
    polygon([[0,0],[10,0], [8,10], [2,10]]);
}

5) more 3d rounding …

$fn=20;
difference(){
  linear_extrude(height=10)
    offset(2) offset(-2) square([10,20]);
  linear_extrude(height=10)
   offset(1) offset(-2) square([10,20]);
}

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