OpenSCAD MCAD Libraries

Installing

Install the latest version of OpenSCAD. This version will include the MCAD library, but on certain systems, you'll have to do a little more than just downloading the application.

Mac

On OSX, in order to use the short path to the MCAD library

Launch Automator
Select Application
Look for the Run Shell Script action and select it.
Change the script to /bin/bash

Paste in the following:

pwd /Applications/OpenSCAD.app/Contents/Resources/libraries
../../MacOS/OpenSCAD

Save it as OpenSCAD and save it somewhere other than Applications
Open Spotlight and type in OpenSCAD, select the version you created. Your library path should now work as intended. Test it with:
```
include <./MCAD/boxes.scad>
roundedBox([20, 30, 40], 5, true);
```

Windows

Linux

bearing.scad

test_bearing() displays a 608 bearing inside a test_bearing_hole.

test_bearing_hole() displays a a cube (size=[30, 30, 7-10*epsilon] ) to hold a bearing.

bearingDimensions(model) Sets the dimensions for the following bearing numbers. 608 (Skatebearing) is the model default.
608 = [8*mm, 22*mm, 7*mm]
623 = [3*mm, 10*mm, 4*mm]
624 = [4*mm, 13*mm, 5*mm]
627 = [7*mm, 22*mm, 7*mm]
688 = [8*mm, 16*mm, 4*mm]
698 = [8*mm, 19*mm, 6*mm]

bearing(pos=[0,0,0], angle=[0,0,0], model=SkateBearing, outline=false, material=Steel, sideMaterial=Brass)

example

bearing([0,0,10],[90,0,0]);

boxes.scad

roundedBox([width, height, depth], float radius, bool sidesonly)

example

roundedBox([20, 30, 40], 5, true)

gridbeam.scad

zBeam(segments) create a vertical gridbeam strut 'segments' long

xBeam(segments) create a horizontal gridbeam strut along the X axis

yBeam(segments) create a horizontal gridbeam strut along the Y axis

topShelf(width, depth, corners) create a shelf suitable for use in gridbeam structures width and depth in 'segments', corners == 1 notches corners

bottomShelf(width, depth, corners) like topShelf, but aligns shelf to underside of beams

backBoard(width, height, corners) create a backing board suitable for use in gridbeam structures width and height in 'segments', corners == 1 notches corners

frontBoard(width, height, corners) like backBoard, but aligns board to front side of beams

translateBeam([x, y, z]) translate gridbeam struts or shelves in X, Y, or Z axes in units 'segments'

example

xBeam(3)

metric_fastners.scad

cap_bolt(dia,len)

csk_bolt(dia,len)

washer(dia)

flat_nut(dia)

bolt(dia,len)

cylinder_chamfer(r1,r2)

chamfer(len,r)

example

translate([-20,0,0])
csk_bolt(3,14);
translate([-10,0,0])
washer(3);
translate([0,0,0])
flat_nut(3);

translate([10,0,0])
bolt(4,14);
translate([-15,-12,0])
cylinder_chamfer(8,1);
translate([0,-15,0])
chamfer(10,2);

motors.scad

example

regular_shapes.scad

triangle(radius);

reg_polygon(sides,radius);

hexagon(radius);

heptagon(radius);

octagon(radius);

nonagon(radius);

decagon(radius);

hendecagon(radius);

dodecagon(radius);

ellipse(width, height);

egg_outline(width, length);

cone(height, radius, center = false) ;

oval_prism(height, rx, ry, center = false) ;

oval_tube(height, rx, ry, wall, center = false) ;

cylinder_tube(height, radius, wall, center = false) ;

tubify(radius,wall);

triangle_prism(height,radius);

triangle_tube(height,radius,wall);

pentagon_prism(height,radius);

pentagon_tube(height,radius,wall);

hexagon_prism(height,radius) ;

heptagon_prism(height,radius) ;

octagon_prism(height,radius) ;

nonagon_prism(height,radius);

decagon_prism(height,radius);

hendecagon_prism(height,radius);

dodecagon_prism(height,radius);

torus(outerRadius, innerRadius);

triangle_pyramid(radius);

square_pyramid(base_x, base_y,height);

hardware.scad

rod(length, threaded)

screw(length, nutpos, washer, bearingpos = -1)

bearing(position)

nut(position, washer)

washer(position)

rodnut(position, washer)

rodwasher(position)

example

rod(20);
translate([rodsize * 2.5, 0, 0]) rod(20, true);
translate([rodsize * 5, 0, 0]) screw(10, true);
translate([rodsize * 7.5, 0, 0]) bearing();
translate([rodsize * 10, 0, 0]) rodnut();
translate([rodsize * 12.5, 0, 0]) rodwasher();
translate([rodsize * 15, 0, 0]) nut();
translate([rodsize * 17.5, 0, 0]) washer();

screw.scad

helix(pitch, length, slices=500);

auger(pitch, length, outside_diameter, inner_diameter);

test_auger();

ball_groove(pitch, length, diameter, ball_radius=10);

test_ball_groove();

ball_groove2(pitch, length, diameter, ball_radius, slices=200);

test_ball_groove2();

example

translate([-180,0,0])
auger(100, 300);

ball_groove2(100, 300, 100, 10);

translate([170,0,0])
ball_groove(100, 300, 10);

triangles.scad

triangle(o_len, a_len, depth)

a_triangle(tan_angle, a_len, depth)

example

triangle(5, 5, 5);

translate([10,0,0])
 a_triangle(30, 5, 5);

translate([20,0,0])
a_triangle(60, 5, 5);

teardrop.scad

This script generates a teardrop shape at the appropriate angle to prevent overhangs greater than 45 degrees. The angle is in degrees, and is a rotation around the Y axis. You can then rotate around Z to point it in any direction. Rotation around X or Y will cause the angle to be wrong.

teardrop(radius, length, angle)

example

teardrop(10, 10, 60);

stepper.scad

motor(model=Nema23, size=NemaMedium, dualAxis=false, pos=[0,0,0], orientation = [0,0,0])

example

rotate([0,180,0])
 motor(Nema17);

shapes.scad

box(width, height, depth);

roundedBox(width, height, depth, radius);

cone(height, radius, center = false) ;

ellipticalCylinder(w,h, height, center = false);

ellipsoid(w, h, center = false);

tube(height, radius, wall, center = false);

tube2(height, ID, OD, center = false);

ovalTube(height, rx, ry, wall, center = false);

ngon(sides, radius, center=false);

hexagon(size, height);

octagon(size, height);

dodecagon(size, height);

hexagram(size, height);

rightTriangle(adjacent, opposite, height);

equiTriangle(side, height);

12ptStar(size, height);

dislocateBox(w, h, d);

servo.scad

For the Align DS420 digital servo

alignds420(position, rotation, screws = 0, axle_lenght = 0)

example

alignds420(screws=1);

motors.scad

stepper_motor_mount(nema_standard,slide_distance=0, mochup=true, tolerance=0)

example

stepper_motor_mount(17,slide_distance=0, mochup=true, tolerance=0);

involute_gears.scad

bevel_gear_pair ( gear1_teeth = 41, gear2_teeth = 7, axis_angle = 90, outside_circular_pitch=1000)

bevel_gear ( number_of_teeth=11, cone_distance=100, face_width=20, outside_circular_pitch=1000, pressure_angle=30, clearance = 0.2, bore_diameter=5, gear_thickness = 15, backlash = 0, involute_facets=0, finish = -1)

nvolute_bevel_gear_tooth ( back_cone_radius, root_radius, base_radius, outer_radius, pitch_apex, cone_distance, half_thick_angle, involute_facets)

gear ( number_of_teeth=15, circular_pitch=false, diametral_pitch=false, pressure_angle=28, clearance = 0.2, gear_thickness=5, rim_thickness=8, rim_width=5, hub_thickness=10, hub_diameter=15, bore_diameter=5, circles=0, backlash=0, twist=0, involute_facets=0, flat=false)

gear_shape ( number_of_teeth, pitch_radius, root_radius, base_radius, outer_radius, half_thick_angle, involute_facets)

involute_gear_tooth ( pitch_radius, root_radius, base_radius, outer_radius, half_thick_angle, involute_facets)

example

gear (circular_pitch=700,
gear_thickness = 12,
rim_thickness = 15,
hub_thickness = 17,
circles=8);

Navigation

OpenSCAD MCAD Libraries

Installing

Mac

Windows

Linux

bearing.scad

boxes.scad

gridbeam.scad

metric_fastners.scad

motors.scad

regular_shapes.scad

hardware.scad

screw.scad

triangles.scad

teardrop.scad

stepper.scad

shapes.scad

servo.scad

motors.scad

involute_gears.scad