This repository hosts an OpenSCAD script with a couple of modules for drawing quarter circles and tori.

The recommended installation method is to add this repository as a submodule in your repository and pull in the script with this line:

use <openscad-quarter-circle-torus/quarter-circle-torus.scad>

The documentation for the available modules follows.

Parameters:

• side: the side of the enclosing square (default 10)
• quadrant: the quadrant of the circle to draw (default 0)
  • 0: top left quarter circle
  • 1: bottom left quarter circle
  • 2: bottom right quarter circle
  • 3: top right quarter circle
• $fn (facet number): built-in OpenSCAD variable for smoothing the round edge

linear_extrude(height = 1)
quarter_circle(quadrant = 0, $fn = 100);

linear_extrude(height = 1)
quarter_circle(quadrant = 1, $fn = 100);

linear_extrude(height = 1)
quarter_circle(quadrant = 2, $fn = 100);

linear_extrude(height = 1)
quarter_circle(quadrant = 3, $fn = 100);

Parameters:

• side: the side of the enclosing square (default 10)
• quadrant: the inverted quarter of the circle to draw (default 0)
  • 0: top left inverted quarter circle
  • 1: bottom left inverted quarter circle
  • 2: bottom right inverted quarter circle
  • 3: top right inverted quarter circle
• $fn (facet number): built-in OpenSCAD variable for smoothing the round edge

linear_extrude(height = 1)
inverted_quarter_circle(quadrant = 0, $fn = 100);

linear_extrude(height = 1)
inverted_quarter_circle(quadrant = 1, $fn = 100);

linear_extrude(height = 1)
inverted_quarter_circle(quadrant = 2, $fn = 100);

linear_extrude(height = 1)
inverted_quarter_circle(quadrant = 3, $fn = 100);

Parameters:

• angle: the extrusion angle (0-360)
• radius: the radius of the torus hole
• side: the bounding square side of the looped quarter circle making the torus (default 10)
• quadrant: the orientation and type of the slope of the hole (0-3, difficult to explain - just try it)
• $fn (facet number): built-in OpenSCAD variable for smoothing the round edge

quarter_torus(quadrant = 0, $fn = 100);

quarter_torus(quadrant = 1, $fn = 100);

quarter_torus(quadrant = 2, $fn = 100);

quarter_torus(quadrant = 3, $fn = 100);

Parameters:

• angle: the extrusion angle (0-360)
• radius: the radius of the inverted torus hole
• side: the bounding square side of the looped inverted quarter circle making the torus (default 10)
• quadrant: the orientation and type of the slope of the hole (0-3, difficult to explain - just try it)
• $fn (facet number): built-in OpenSCAD variable for smoothing the round edge

inverted_quarter_torus(quadrant = 0, $fn = 100);

inverted_quarter_torus(quadrant = 1, $fn = 100);

inverted_quarter_torus(quadrant = 2, $fn = 100);

inverted_quarter_torus(quadrant = 3, $fn = 100);