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Add A 2nd Level For Supportless Hole Generation

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Makes holes print better.

Use Affine Translation Matrices to be clear
how everything works without being too verbose.
This commit is contained in:
Arthur Moore 2024-04-21 23:43:48 -04:00
parent 32f91a77ca
commit c47661af7f
1 changed files with 47 additions and 11 deletions
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58
gridfinity-rebuilt-holes.scad
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@ -70,19 +70,53 @@ module ribbed_cylinder(outer_radius, inner_radius, height, ribs) {
);
}
/**
* @brief Make a magnet hole printable without suports.
* @brief Make a hole printable without suports.
* @see https://www.youtube.com/watch?v=W8FbHTcB05w
* @param screw_radius Radius of the screw hole.
* @param magnet_radius Radius of the magnet hole.
* @param magnet_depth Depth of the magnet hole.
* @param inner_radius Radius of the inner hole.
* @param outer_radius Radius of the outer hole.
* @param outer_depth Depth of the magnet hole.
* @details This is the negative designed to be cut out of the magnet hole.
* Use it with `difference()`.
*/
module make_magnet_hole_printable(screw_radius, magnet_radius, magnet_depth) {
copy_mirror([0,1,0]) {
translate([-1.5*magnet_radius, screw_radius+0.1, magnet_depth - LAYER_HEIGHT])
cube([magnet_radius*3, magnet_radius*3, 10]);
module make_hole_printable(inner_radius, outer_radius, outer_depth) {
assert(inner_radius > 0, "inner_radius must be positive");
assert(outer_radius > 0, "outer_radius must be positive");
assert(outer_depth > 2*LAYER_HEIGHT, str("outer_depth must be at least ", 2*LAYER_HEIGHT));
tollerance = 0.001; // To make sure the top layer is fully removed
translation_matrix = affine_translate([
-outer_radius,
inner_radius,
outer_depth - 2*LAYER_HEIGHT
]);
second_translation_matrix = translation_matrix * affine_translate([0, 0, LAYER_HEIGHT]);
cube_dimensions = [
outer_radius*2,
outer_radius - inner_radius,
LAYER_HEIGHT + tollerance
];
union(){
union() {
multmatrix(translation_matrix)
cube(cube_dimensions);
multmatrix(affine_rotate([0, 0, 180]) * translation_matrix)
cube(cube_dimensions);
}
//2nd level
union() {
multmatrix(second_translation_matrix)
cube(cube_dimensions);
multmatrix(affine_rotate([0, 0, 90]) * second_translation_matrix)
cube(cube_dimensions);
multmatrix(affine_rotate([0, 0, 180]) * second_translation_matrix)
cube(cube_dimensions);
multmatrix(affine_rotate([0, 0, 270]) * second_translation_matrix)
cube(cube_dimensions);
}
}
}
@ -175,8 +209,10 @@ module block_base_hole(hole_options, o=0) {
magnet_radius = MAGNET_HOLE_RADIUS - (o/2);
magnet_inner_radius = MAGNET_HOLE_CRUSH_RIB_INNER_RADIUS - (o/2);
screw_depth = h_base-o;
// If using supportless / printable mode, need to add an additional layer, so it can be removed later
magnet_depth = MAGNET_HOLE_DEPTH - o + (supportless ? LAYER_HEIGHT : 0);
// If using supportless / printable mode, need to add two additional layers, so they can be removed later.
supportless_additional_depth = 2* LAYER_HEIGHT;
magnet_depth = MAGNET_HOLE_DEPTH - o +
(supportless ? supportless_additional_depth : 0);
union() {
if(refined_hole) {
@ -192,7 +228,7 @@ module block_base_hole(hole_options, o=0) {
}
if(supportless) {
make_magnet_hole_printable(screw_radius, magnet_radius, magnet_depth);
make_hole_printable(screw_radius, magnet_radius, magnet_depth);
}
}