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Merge pull request #214 from EmperorArthur/base_profile

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Define the profile of the base by sweeping a polygon
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Arthur Moore 2024-09-19 18:04:15 -04:00 committed by GitHub
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4 changed files with 161 additions and 99 deletions
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30
gridfinity-rebuilt-holes.scad
View file

@ -235,8 +235,30 @@ module screw_hole(radius, height, supportless=false, chamfer_radius=0, chamfer_a
* @param supportless If the magnet/screw hole should be printed in such a way that the screw hole does not require supports.
*/
function bundle_hole_options(refined_hole=false, magnet_hole=false, screw_hole=false, crush_ribs=false, chamfer=false, supportless=false) =
assert(
is_bool(refined_hole) &&
is_bool(magnet_hole) &&
is_bool(screw_hole) &&
is_bool(crush_ribs) &&
is_bool(chamfer) &&
is_bool(supportless))
[refined_hole, magnet_hole, screw_hole, crush_ribs, chamfer, supportless];
/**
* @summary Ensures that hole options are valid, and can be used.
*/
module assert_hole_options_valid(hole_options) {
assert(is_list(hole_options) && len(hole_options) == 6);
for(option=hole_options){
assert(is_bool(option), "One or more hole options is not a boolean value!");
}
refined_hole = hole_options[0];
magnet_hole = hole_options[1];
if(refined_hole) {
assert(!magnet_hole, "magnet_hole is not compatible with refined_hole");
}
}
/**
* @brief A single magnet/screw hole. To be cut out of the base.
* @details Supports multiple options that can be mixed and matched.
@ -244,7 +266,8 @@ function bundle_hole_options(refined_hole=false, magnet_hole=false, screw_hole=f
* @param o Offset
*/
module block_base_hole(hole_options, o=0) {
assert(is_list(hole_options));
assert_hole_options_valid(hole_options);
assert(is_num(o));
// Destructure the options
refined_hole = hole_options[0];
@ -254,11 +277,6 @@ module block_base_hole(hole_options, o=0) {
chamfer = hole_options[4];
supportless = hole_options[5];
// Validate said options
if(refined_hole) {
assert(!magnet_hole, "magnet_hole is not compatible with refined_hole");
}
screw_radius = SCREW_HOLE_RADIUS - (o/2);
magnet_radius = MAGNET_HOLE_RADIUS - (o/2);
magnet_inner_radius = MAGNET_HOLE_CRUSH_RIB_INNER_RADIUS - (o/2);

149
gridfinity-rebuilt-utility.scad
View file

@ -199,44 +199,56 @@ module cut_move(x, y, w, h) {
// ===== Modules ===== //
module profile_base() {
polygon([
[0,0],
[0,h_base],
[r_base,h_base],
[r_base-r_c2,h_base-r_c2],
[r_base-r_c2,r_c1],
[r_base-r_c2-r_c1,0]
]);
}
/**
*@summary Create the base of a gridfinity bin, or use it for a custom object.
* @param length X,Y size of a single Gridfinity base.
*/
module gridfinityBase(gx, gy, length, dx, dy, hole_options=bundle_hole_options(), off=0, final_cut=true, only_corners=false) {
assert(
is_num(gx) &&
is_num(gy) &&
is_num(length) &&
is_num(dx) &&
is_num(dy) &&
is_bool(final_cut) &&
is_bool(only_corners)
);
module gridfinityBase(gx, gy, l, dx, dy, hole_options=bundle_hole_options(), off=0, final_cut=true, only_corners=false) {
dbnxt = [for (i=[1:5]) if (abs(gx*i)%1 < 0.001 || abs(gx*i)%1 > 0.999) i];
dbnyt = [for (i=[1:5]) if (abs(gy*i)%1 < 0.001 || abs(gy*i)%1 > 0.999) i];
dbnx = 1/(dx==0 ? len(dbnxt) > 0 ? dbnxt[0] : 1 : round(dx));
dbny = 1/(dy==0 ? len(dbnyt) > 0 ? dbnyt[0] : 1 : round(dy));
xx = gx*l-0.5;
yy = gy*l-0.5;
dbnx = 1/(dx != 0 ? round(dx) : (len(dbnxt) > 0 ? dbnxt[0] : 1));
dbny = 1/(dy != 0 ? round(dy) : (len(dbnyt) > 0 ? dbnyt[0] : 1));
if (final_cut)
translate([0,0,h_base])
rounded_rectangle(xx+0.002, yy+0.002, h_bot/1.5, r_fo1+0.001);
// Final size in number of bases
grid_size = [gx/dbnx, gy/dbny];
intersection(){
if (final_cut)
translate([0,0,-1])
rounded_rectangle(xx+0.005, yy+0.005, h_base+h_bot/2*10, r_fo1+0.001);
// Per spec, there's a 0.5mm gap between each base,
// But that needs to be scaled based on everything else.
individual_base_size_mm = [dbnx, dbny] * BASE_SIZE;
base_center_distance_mm = [dbnx, dbny] * length;
gap_mm = base_center_distance_mm - individual_base_size_mm;
// Final size of the base top. In mm.
grid_size_mm = [
base_center_distance_mm.x * grid_size.x,
base_center_distance_mm.y * grid_size.y,
] - gap_mm;
if (final_cut) {
translate([0, 0, h_base-TOLLERANCE])
rounded_square([grid_size_mm.x, grid_size_mm.y, h_bot], BASE_OUTSIDE_RADIUS, center=true);
}
if(only_corners) {
difference(){
pattern_linear(gx/dbnx, gy/dbny, dbnx*l, dbny*l)
block_base(gx, gy, l, dbnx, dbny, bundle_hole_options(), off);
pattern_linear(grid_size.x, grid_size.y, base_center_distance_mm.x, base_center_distance_mm.y)
block_base(bundle_hole_options(), 0, individual_base_size_mm);
copy_mirror([0, 1, 0]) {
copy_mirror([1, 0, 0]) {
translate([
(gx/2)*l_grid - d_hole_from_side,
(gy/2) * l_grid - d_hole_from_side,
grid_size_mm.x/2 - HOLE_DISTANCE_FROM_BOTTOM_EDGE - BASE_PROFILE_MAX.x,
grid_size_mm.y/2 - HOLE_DISTANCE_FROM_BOTTOM_EDGE - BASE_PROFILE_MAX.x,
0
])
block_base_hole(hole_options, off);
@ -245,57 +257,64 @@ module gridfinityBase(gx, gy, l, dx, dy, hole_options=bundle_hole_options(), off
}
}
else {
pattern_linear(gx/dbnx, gy/dbny, dbnx*l, dbny*l)
block_base(gx, gy, l, dbnx, dbny, hole_options, off);
}
pattern_linear(grid_size.x, grid_size.y, base_center_distance_mm.x, base_center_distance_mm.y)
block_base(hole_options, off, individual_base_size_mm);
}
}
/**
* @brief A single Gridfinity base. With holes (if set).
* @param gx
* @param gy
* @param l
* @param dbnx
* @param dbny
* @param hole_options @see block_base_hole.hole_options
* @param off
* @param size [x, y] size of a single base. Only set if deviating from the standard!
*/
module block_base(gx, gy, l, dbnx, dbny, hole_options, off) {
module block_base(hole_options, off=0, size=[BASE_SIZE, BASE_SIZE]) {
assert(is_list(size) && len(size) == 2);
// How far, in the +x direction,
// the profile needs to be from it's [0, 0] point
// such that when swept by 90 degrees to produce a corner,
// the outside edge has the desired radius.
translation_x = BASE_OUTSIDE_RADIUS - BASE_PROFILE_MAX.x;
outer_diameter = [2*BASE_OUTSIDE_RADIUS, 2*BASE_OUTSIDE_RADIUS];
base_profile_size = size - outer_diameter;
base_bottom_size = base_profile_size + [2*translation_x, 2*translation_x];
assert(base_profile_size.x > 0 && base_profile_size.y > 0,
str("Minimum size of a single base must be greater than ", outer_diameter)
);
render(convexity = 2)
difference() {
block_base_solid(dbnx, dbny, l, off);
pattern_circular(abs(l-d_hole_from_side/2)<0.001?1:4)
translate([l/2-d_hole_from_side, l/2-d_hole_from_side, 0])
block_base_hole(hole_options, off);
}
}
/**
* @brief A gridfinity base with no holes.
* @details Used as the "base" with holes removed from it later.
* @param dbnx
* @param dbny
* @param l
* @param o
*/
module block_base_solid(dbnx, dbny, l, o) {
xx = dbnx*l-0.05;
yy = dbny*l-0.05;
oo = (o/2)*(sqrt(2)-1);
translate([0,0,h_base])
mirror([0,0,1])
union() {
hull() {
rounded_rectangle(xx-2*r_c2-2*r_c1+o, yy-2*r_c2-2*r_c1+o, h_base+oo, r_fo3);
rounded_rectangle(xx-2*r_c2+o, yy-2*r_c2+o, h_base-r_c1+oo, r_fo2);
sweep_rounded(base_profile_size.x, base_profile_size.y)
translate([translation_x, 0, 0])
polygon(BASE_PROFILE);
rounded_square(
[
base_bottom_size.x + TOLLERANCE,
base_bottom_size.y + TOLLERANCE,
BASE_PROFILE_MAX.y
],
translation_x,
center=true
);
}
translate([0,0,oo])
hull() {
rounded_rectangle(xx-2*r_c2+o, yy-2*r_c2+o, r_c2, r_fo2);
mirror([0,0,1])
rounded_rectangle(xx+o, yy+o, h_bot/2+abs(10*o), r_fo1);
// 4 holes
// Need this fancy code to support refined holes and non-square bases.
for(a=[0:90:270]){
// i and j represent the 4 quadrants.
// The +1 is used to keep any values from being exactly 0.
j = sign(sin(a+1));
i = sign(cos(a+1));
translate([
i * (base_bottom_size.x/2 - HOLE_DISTANCE_FROM_BOTTOM_EDGE),
j * (base_bottom_size.y/2 - HOLE_DISTANCE_FROM_BOTTOM_EDGE),
0])
rotate([0, 0, a])
block_base_hole(hole_options, off);
}
}
}

13
gridfinity-spiral-vase.scad
View file

@ -72,13 +72,20 @@ else gridfinityVase(); // Generate the bin
// ===== CONSTRUCTION ===== //
//Deprecated Variables
r_fo2 = 3.2 / 2; // outside radii 2
r_fo3 = 1.6 / 2; // outside radii 3
r_c2 = 2.4; // upper base chamfer "radius"
d_hole = 26; // center-to-center distance between holes
//End Deprecated Variables
d_bottom = layer*(max(bottom_layer,1));
x_l = l_grid/2;
dht = (gridz_define==0)?gridz*7 : (gridz_define==1)?h_bot+gridz+h_base : gridz-(enable_lip?3.8:0);
d_height = (enable_zsnap?((abs(dht)%7==0)?dht:dht+7-abs(dht)%7):dht)-h_base;
d_fo1 = 2*r_fo1;
d_fo1 = 2*+BASE_OUTSIDE_RADIUS;
f2c = sqrt(2)*(sqrt(2)-1); // fillet to chamfer ratio
me = ((gridx*l_grid-0.5)/n_divx)-nozzle*4-d_fo1-12.7-4;
@ -161,7 +168,7 @@ module gridfinityBaseVase() {
intersection() {
block_base_blank(0);
translate([0,0,-h_base-1])
rounded_square([l_grid-0.5-0.005, l_grid-0.5-0.005, h_base*10], r_fo1+0.001, center=true);
rounded_square([l_grid-0.5-0.005, l_grid-0.5-0.005, h_base*10], BASE_OUTSIDE_RADIUS+0.001, center=true);
}
translate([0,0,0.01])
difference() {
@ -229,7 +236,7 @@ module block_base_blank(o = 0) {
rounded_square(l_grid-o-0.05-2*r_c2, r_fo2, center=true);
mirror([0,0,1])
linear_extrude(d_bottom)
rounded_square(l_grid-o-0.05, r_fo1, center=true);
rounded_square(l_grid-o-0.05, BASE_OUTSIDE_RADIUS, center=true);
}
}
}

48
standard.scad
View file

@ -1,25 +1,15 @@
// height of the base
h_base = 5;
// lower base chamfer "radius"
r_c1 = 0.8;
// upper base chamfer "radius"
r_c2 = 2.4;
// bottom thiccness of bin
h_bot = 2.2;
// outside radii 1
r_fo1 = 7.5 / 2;
// outside radii 2
r_fo2 = 3.2 / 2;
// outside radii 3
r_fo3 = 1.6 / 2;
// length of a grid unit
l_grid = 42;
// Outside rounded radius of bin
// Per spec, matches radius of upper base section.
r_base = r_fo1;
r_base = 7.5 / 2;
// Tollerance to make sure cuts don't leave a sliver behind,
// and that items are properly connected to each other.
@ -35,11 +25,12 @@ SCREW_HOLE_RADIUS = 3 / 2;
MAGNET_HOLE_RADIUS = 6.5 / 2;
MAGNET_HOLE_DEPTH = MAGNET_HEIGHT + (LAYER_HEIGHT * 2);
// center-to-center distance between holes
d_hole = 26;
// distance of hole from side of bin
d_hole_from_side=8;
// Based on https://gridfinity.xyz/specification/
HOLE_DISTANCE_FROM_BOTTOM_EDGE = 4.8;
// Meassured diameter in Fusion360.
// Smaller than the magnet to keep it squeezed.
REFINED_HOLE_RADIUS = 5.86 / 2;
@ -62,6 +53,7 @@ CHAMFER_ANGLE = 45;
BASEPLATE_SCREW_COUNTERSINK_ADDITIONAL_RADIUS = 5/2;
BASEPLATE_SCREW_COUNTERBORE_RADIUS = 5.5/2;
BASEPLATE_SCREW_COUNTERBORE_HEIGHT = 3;
// ****************************************
// top edge fillet radius
@ -109,6 +101,34 @@ stacking_lip_support_wall_height_mm = 1.2;
stacking_lip_support_height_mm =
stacking_lip_support_wall_height_mm + d_wall2;
// ****************************************
// Base constants
// Based on https://gridfinity.xyz/specification/
// ****************************************
BASE_OUTSIDE_RADIUS = r_base;
BASE_PROFILE = [
[0, 0], // Innermost bottom point
[0.8, 0.8], // Up and out at a 45 degree angle
[0.8, (0.8+1.8)], // Straight up
[(0.8+2.15), (0.8+1.8+2.15)], // Up and out at a 45 degree angle
[0, (0.8+1.8+2.15)], // Go in to form a solid polygon
[0, 0] //Back to start
];
// Maximum [x,y] values/size of the base.
BASE_PROFILE_MAX = BASE_PROFILE[3];
// Each unit's base is 41.5mm x 41.5mm
// Leaving 0.5mm gap with an l_grid of 42
BASE_SIZE = 41.5;
/**
* @summary Height of the raw base
*/
h_base = BASE_PROFILE_MAX.y;
// ****************************************
// Baseplate constants
// Based on https://gridfinity.xyz/specification/
@ -159,8 +179,6 @@ bp_rcut_depth = 2;
// ****************************************
// Baseplate clearance offset
bp_xy_clearance = 0.5;
// radius of cutout for skeletonized baseplate
r_skel = 2;
// minimum baseplate thickness (when skeletonized)