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Lib updates.

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Jonathan Bernard
2025-12-26 13:25:38 -06:00
parent 78bd6b9738
commit b71f1d2295
3 changed files with 209 additions and 0 deletions
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lib/metric-machine-screws.scad
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module m3Nut(h = 2.4, clearance = 0, center=false) {
$fn=6;
cylinder(d=6.35 + 2*clearance, h=h, center=center);
}
module m4Nut(h = 3.2, clearance = 0, center=false) {
$fn=6;
cylinder(d=8.08 + 2*clearance, h=h, center=center);
}
lib/mortice-and-tenon.scad
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module tenon(dims) {
translate([0, -0.01, 0])
difference() {
cube([dims[0], dims[1] + 0.01, dims[2]]);
// chamfers
color("blue") union() {
translate([-0.5, dims[1]*0.95, dims[2]*0.9]) rotate([45, 0, 0])
translate([0, 0, -dims[2]/2]) cube([dims[0] + 1, 2, 2]);
translate([-0.5, dims[1]*0.95, -dims[2]*0.8]) rotate([45, 0, 0])
translate([0, 0, -dims[2]/2]) cube([dims[0] + 1, 2, 2]);
translate([-0.4, dims[1]-1, -0.5]) rotate([0, 0, 45])
cube([2, 2, dims[2] + 1]);
translate([dims[0]+0.4, dims[1]-1, -0.5]) rotate([0, 0, 45])
cube([2, 2, dims[2] + 1]);
}
}
}
module morticeBlank(dims, clearance) {
translate([-clearance, -clearance-0.01, -clearance])
cube([dims[0] + 2 * clearance, dims[1] + 2 * clearance+0.01, dims[2] + 2 * clearance]);
}
module rectDowel(dim = [6, 16, 3]) {
// rectangular dowel
translate([-dim[0]/2, -dim[1]/2, -dim[2]/2])
cube(dim);
}
// Create a cube with a mortice cut out of the center for a snap fit tenon.
// The mortice is aligned on the Y-axis: the dimension in X determines the
// width of the piece and mortice, the dimension in Y determines the depth or
// length of the piece, and the dimension in Z determines the height thickness.
//
// The morticeDim dimensions will be enlarged slightly to allow for adequate
// fitment of the tenon based on the clearance (defaults to 0.2).
module morticeWithSnap(
dim = [10, 20, 5],
morticeDim = [6, 8, 3],
snapDepth = 2,
snapHeight = 1,
clearance = 0.3) {
mDim = [morticeDim[0] + 2*clearance,
morticeDim[1] + clearance,
morticeDim[2] + clearance];
difference() {
// block
translate([-dim[0]/2, 0, -dim[2]/2]) cube(dim);
// cutout
translate([-mDim[0]/2, -clearance, -mDim[2]/2]) union() {
cube(mDim); // mortice cutout
// snap fit cutout
translate([0, morticeDim[1] - snapDepth, morticeDim[2] + clearance - 0.01])
cube([morticeDim[0] + clearance,
snapDepth + clearance,
snapHeight + clearance + 0.01]);
}
}
}
// Create a cube with a tenon and cantilevered snap fit on one side.
// The tenon is aligned on the Y-axis: the dimension in X determines the
// width of the piece and tenon, the dimension in Y determines the depth or
// length of the piece, and the dimension in Z determines the height thickness.
module tenonWithSnap(
dim = [10, 20, 5],
tenonDim = [6, 8, 3],
snapDepth = 2,
snapHeight = 1) {
// block
translate([-dim[0]/2, 0, -dim[2]/2]) cube(dim);
// tenon
translate([-tenonDim[0]/2, dim[1] - 0.01, -tenonDim[2]/2]) union() {
// main tenon body
tenonFlexArmThickness = min(tenonDim[2] / 2, 1);
color("blue") translate([0, 0, tenonDim[2] - tenonFlexArmThickness])
cube([tenonDim[0], tenonDim[1], tenonFlexArmThickness]);
// fillet on front edge of tenon
/*
translate([0, tenonDim[1] / 4 - 0.05, tenonDim[2] / 4 + 0.03])
difference() {
color("blue") cube([tenonDim[0], tenonDim[1] / 8, tenonDim[2] / 4]);
color("green") translate([tenonDim[0] /2, tenonDim[1]/8 - tenonDim[2]/16, 0]) rotate([0, 90, 0])
cylinder(r = tenonDim[2] / 4, h = tenonDim[0] + 0.02, center=true);
}
*/
// 45-degree chamfer on top edges of tenon base (alignment feature)
difference() {
cube([tenonDim[0], tenonDim[1]*0.4, tenonDim[2]]);
translate([-0.01, tenonDim[1]*0.4, -tenonDim[2]/2]) rotate([45, 0, 0])
cube([tenonDim[0] + 0.02, tenonDim[1] / 4, tenonDim[2] / 2]);
}
// cantilevered snap fit
translate([0, tenonDim[1] - snapDepth, tenonDim[2] - 0.01])
difference() {
cube([tenonDim[0], snapDepth, snapHeight + 0.01]);
color("red") union() {
// front-edge chamfer
translate([-0.01, -snapDepth, snapHeight*0.66]) rotate([-10, 0, 0])
cube([tenonDim[0] + 0.02, snapDepth, snapHeight + 0.01]);
// back-edge chamfer
translate([-0.01, snapDepth, snapHeight / 8]) rotate([15, 0, 0])
cube([tenonDim[0] + 0.02, snapDepth, snapHeight + 0.01]);
// side chamfers
translate([-tenonDim[0]/4, 0, snapHeight*0.66]) rotate([0, 10, 0])
cube([tenonDim[0] / 4, snapDepth + 0.02, snapHeight]);
translate([tenonDim[0], 0, snapHeight*0.60]) rotate([0, -10, 0])
cube([tenonDim[0] / 4, snapDepth + 0.02, snapHeight]);
}
}
}
}
lib/rounded-cube.scad
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module roundedCube(dims = [10, 10, 10], cornerRadii = [2, 2, 2]) {
innerDims = [
dims[0] - cornerRadii[0]*2,
dims[1] - cornerRadii[1]*2,
dims[2] - cornerRadii[2]*2 ];
// X-Y
translate(cornerRadii)
scale([cornerRadii[0], cornerRadii[1], 1])
cylinder(r=1, h = innerDims[2]);
translate([cornerRadii[0], cornerRadii[1] + innerDims[1], cornerRadii[2]])
scale([cornerRadii[0], cornerRadii[1], 1])
cylinder(r=1, h = innerDims[2]);
translate([cornerRadii[0] + innerDims[0], cornerRadii[1] + innerDims[1], cornerRadii[2]])
scale([cornerRadii[0], cornerRadii[1], 1])
cylinder(r=1, h = innerDims[2]);
translate([cornerRadii[0] + innerDims[0], cornerRadii[1], cornerRadii[2]])
scale([cornerRadii[0], cornerRadii[1], 1])
cylinder(r=1, h = innerDims[2]);
translate([cornerRadii[0], cornerRadii[1], 0]) cube([innerDims[0], innerDims[1], dims[2]]);
// X-Z
translate(cornerRadii)
scale([cornerRadii[0], 1, cornerRadii[2]])
rotate([-90, 0, 0]) cylinder(r=1, h = innerDims[1]);
translate([cornerRadii[0] + innerDims[0], cornerRadii[1], cornerRadii[2]])
scale([cornerRadii[0], 1, cornerRadii[2]])
rotate([-90, 0, 0]) cylinder(r=1, h = innerDims[1]);
translate([cornerRadii[0], cornerRadii[1], cornerRadii[2] + innerDims[2]])
scale([cornerRadii[0], 1, cornerRadii[2]])
rotate([-90, 0, 0]) cylinder(r=1, h = innerDims[1]);
translate([cornerRadii[0] + innerDims[0], cornerRadii[1], cornerRadii[2] + innerDims[2]])
scale([cornerRadii[0], 1, cornerRadii[2]])
rotate([-90, 0, 0]) cylinder(r=1, h = innerDims[1]);
translate([cornerRadii[0], 0, cornerRadii[2]]) cube([innerDims[0], dims[1], innerDims[2]]);
// Y-Z
translate([cornerRadii[0] + innerDims[0], cornerRadii[1] + innerDims[1], cornerRadii[2]])
scale([1, cornerRadii[1], cornerRadii[2]])
rotate([-90, 0, 90]) cylinder(r=1, h = innerDims[0]);
translate([cornerRadii[0] + innerDims[0], cornerRadii[1], cornerRadii[2]])
scale([1, cornerRadii[1], cornerRadii[2]])
rotate([-90, 0, 90]) cylinder(r=1, h = innerDims[0]);
translate([cornerRadii[0] + innerDims[0], cornerRadii[1] + innerDims[1], cornerRadii[2] + innerDims[2]])
scale([1, cornerRadii[1], cornerRadii[2]])
rotate([-90, 0, 90]) cylinder(r=1, h = innerDims[0]);
translate([cornerRadii[0] + innerDims[0], cornerRadii[1], cornerRadii[2] + innerDims[2]])
scale([1, cornerRadii[1], cornerRadii[2]])
rotate([-90, 0, 90]) cylinder(r=1, h = innerDims[0]);
translate([0, cornerRadii[1], cornerRadii[2]]) cube([dims[0], innerDims[1], innerDims[2]]);
// corners
translate(cornerRadii)
scale(cornerRadii) sphere(r=1);
translate([cornerRadii[0] + innerDims[0], cornerRadii[1], cornerRadii[2]])
scale(cornerRadii) sphere(r=1);
translate([cornerRadii[0] + innerDims[0], cornerRadii[1] + innerDims[1], cornerRadii[2]])
scale(cornerRadii) sphere(r=1);
translate([cornerRadii[0], cornerRadii[1] + innerDims[1], cornerRadii[2]])
scale(cornerRadii) sphere(r=1);
translate([cornerRadii[0], cornerRadii[1], cornerRadii[2] + innerDims[2]])
scale(cornerRadii) sphere(r=1);
translate([cornerRadii[0] + innerDims[0], cornerRadii[1], cornerRadii[2] + innerDims[2]])
scale(cornerRadii) sphere(r=1);
translate([cornerRadii[0] + innerDims[0], cornerRadii[1] + innerDims[1], cornerRadii[2] + innerDims[2]])
scale(cornerRadii) sphere(r=1);
translate([cornerRadii[0], cornerRadii[1] + innerDims[1], cornerRadii[2] + innerDims[2]])
scale(cornerRadii) sphere(r=1);
}