BlitzKraft/rounded_cubes

Drop-in replacement for cube module to create rounded edges

Cubes with rounded corners for openSCAD

Features

• Drop-in replacement for cube() function
• Design/prototype with cube() for fast preview and just replace it where needed.
• Optionally, specify a rounding radius for each cube. Default is 5% of smallest dimension
• Skip rounding of top and bottom faces with flat_tops module
• cube(x) works with both x as a number and a vector
• Use $fn=4 for chamfered edges - works great with flat_tops, but will cause some shrinking in z for round_cube.
• round_square is now an option as a 2D shape

Usage

• Copy the rounded_cubes.scad file, and add use <path/rounded_cubes.scad> before calling any of the modules.

Example

use <round_cube.scad>

cube([10, 10, 10], $fn=20);
translate([15, 0, 0])
flat_tops([10, 10, 10], $fn=20);
translate([30, 0, 0])
round_cube([10, 10, 10], radius=1, $fn=20);
// For the twist to look pretty. 
$fa = 1;
$fs = 0.4;
translate([45 + 5, 5, 0])
linear_extrude(height=10, scale=0.8, twist=180)
round_square([10, 10], $fn=30, radius=2, center=true); 

This results in the following output:

Known issues

• When the radius is greater than half the minimum dimension of the cubes, silently defaults to 5% of the radius.
• $fn value less than 10 can cause noticeable dimensional issues in round_cube()