README.md

BOSL

The Belfry OpenScad Library - A library of tools, shapes, and helpers to make OpenScad easier to use.

This library is a set of useful tools, shapes and manipulators that I developed while working on various projects, including large ones like the Snappy-Reprap printed 3D printer.

Overview

The most commonly useful of the library files is transforms.scad. It provides features such as:

• up(), down(), left(), right(), fwd(), back() as more readable alternatives to translate().
• xrot(), yrot(), zrot() as single-axis alternatives to rotate.
• xspread(), yspread(), and zspread() to evenly space copies of an item along an axis.
• xring(), yring(), zring() to evenly space copies of an item around a circle.
• skewxy() that let you skew objects without using a multmatrix().
• Easy mirroring with xflip(), xflip_copy(), etc.
• Slice items in half with top_half(), left_half(), back_half(), etc.

The shapes.scad library file provides useful compound shapes, such as:

• upcube() a ridiculously useful version of cube() that is centered on top of the XY plane.
• Filleted (rounded) and Chamferred (bevelled) cubes and cylinders.
• pyramid(), prism(), and trapezoid()
• right_triangle()
• teardrop() and onion() for making more 3D printable holes.
• tube() and torus() for donut shapes.
• slot() and arced_slot() for making things like screw slots.
• thinning_wall() makes a vertical wall which thins in the middle, to reduce print volume.
• thinning_triangle() makes a right triangle which thins in the middle, to reduce print volume.
• sparse_strut() makes a cross-braced open strut wall, optimized for support-less 3D printing.
• corrugated_wall() makes a corrugated wall to reduce print volume while keeping strength.