BOSL2

The Belfry OpenScad Library, v2

A library for OpenSCAD, filled with useful tools, shapes, masks, math and manipulators, designed to make OpenSCAD easier to use.

Requires OpenSCAD 2021.01 or later.

• NOTE: BOSL2 IS BETA CODE. THE CODE IS STILL BEING REORGANIZED.
• NOTE2: CODE WRITTEN FOR BOSLv1 PROBABLY WON'T WORK WITH BOSL2!

Documentation

You can find the full BOSL2 library documentation at: https://github.com/BelfrySCAD/BOSL2/wiki

Installation

1. Download the .zip or .tar.gz release file for this library. Currently you should be able to find this at https://github.com/BelfrySCAD/BOSL2/archive/refs/heads/master.zip
2. Unpack it. Make sure that you unpack the whole file structure. Some zipfile unpackers call this option "Use folder names". It should create either a BOSL-v2.0 or BOSL2-master directory with the library files within it. You should see "examples", "scripts", "tests", and other subdirectories.
3. Rename the unpacked main directory to BOSL2.
4. Move the BOSL2 directory into the apropriate OpenSCAD library directory for your platform:
   • Windows: My Documents\OpenSCAD\libraries\
   • Linux: $HOME/.local/share/OpenSCAD/libraries/
   • Mac OS X: $HOME/Documents/OpenSCAD/libraries/
5. Restart OpenSCAD.

Examples

A lot of the features of this library are to allow shorter, easier-to-read, intent-based coding. For example:

BOSL2/transforms.scad Examples	Raw OpenSCAD Equivalent
up(5)	translate([0,0,5])
xrot(30,cp=[0,10,20])	translate([0,10,20]) rotate([30,0,0]) translate([0,-10,-20])
xcopies(20,n=3)	for (dx=[-20,0,20]) translate([dx,0,0])
zrot_copies(n=6,r=20)	for (zr=[0:5]) rotate([0,0,zr*60]) translate([20,0,0])
skew(sxz=0.5,syz=0.333)	multmatrix([[1,0,0.5,0],[0,1,0.333,0],[0,0,1,0],[0,0,0,1]])

BOSL2/shapes.scad Examples	Raw OpenSCAD Equivalent
cube([10,20,30], anchor=BOTTOM);	translate([0,0,15]) cube([10,20,30], center=true);
cuboid([20,20,30], rounding=5);	minkowski() {cube([10,10,20], center=true); sphere(r=5, $fn=32);}
prismoid([30,40],[20,30],h=10);	hull() {translate([0,0,0.005]) cube([30,40,0.01], center=true); translate([0,0,9.995]) cube([20,30,0.01],center=true);}
xcyl(l=20,d=4);	rotate([0,90,0]) cylinder(h=20, d=4, center=true);
cyl(l=100, d=40, rounding=5);	minkowski() {cylinder(h=90, d=30, center=true); sphere(r=5);}
tube(od=40,wall=5,h=30);	difference() {cylinder(d=40,h=30,center=true); cylinder(d=30,h=31,center=true);}
torus(d_maj=100, d_min=30);	rotate_extrude() translate([50,0,0]) circle(d=30);