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Merge pull request #187 from EmperorArthur/simplify_baseplate

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Fix Baseplate Not Rendering & Generate Baseplate From Profile
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Arthur Moore 2024-08-09 00:48:51 -04:00 committed by GitHub
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4 changed files with 357 additions and 77 deletions
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63
generic-helpers.scad
View file

@ -7,15 +7,60 @@ function clp(x,a,b) = min(max(x,a),b);
function is_even(number) = (number%2)==0;
module rounded_rectangle(length, width, height, rad) {
linear_extrude(height)
offset(rad)
offset(-rad)
square([length,width], center = true);
/**
* @brief Create `square`, with rounded corners.
* @param size Same as `square`. See details for differences.
* @param radius Radius of the corners. 0 is the same as just calling `square`
* @param center Same as `square`.
* @details "size" accepts both the standard number or a 2d vector the same as `square`.
* However, if passed a 3d vector, this will apply a `linear_extrude` to the resulting shape.
*/
module rounded_square(size, radius, center = false) {
assert(is_num(size) ||
(is_list(size) && (
(len(size) == 2 && is_num(size.x) && is_num(size.y)) ||
(len(size) == 3 && is_num(size.x) && is_num(size.y) && is_num(size.z))
))
);
assert(is_num(radius) && radius >= 0 && is_bool(center));
// Make sure something is produced.
if (is_num(size)) {
assert((size/2) > radius);
} else {
assert((size.x/2) > radius && (size.y/2 > radius));
if (len(size) == 3) {
assert(size.z > 0);
}
}
if (is_list(size) && len(size) == 3) {
linear_extrude(size.z)
_internal_rounded_square_2d(size, radius, center);
} else {
_internal_rounded_square_2d(size, radius, center);
}
}
module rounded_square(length, height, rad) {
rounded_rectangle(length, length, height, rad);
/**
* @brief Internal module. Do not use. May be changed/removed at any time.
*/
module _internal_rounded_square_2d(size, radius, center) {
diameter = 2*radius;
if (is_list(size)) {
offset(radius)
square([size.x-diameter, size.y-diameter], center = center);
} else {
offset(radius)
square(size-diameter, center = center);
}
}
/**
* @deprecated Use rounded_square(...)
*/
module rounded_rectangle(length, width, height, rad) {
rounded_square([length, width, height], rad, center=true);
}
module copy_mirror(vec=[0,1,0]) {
@ -56,7 +101,7 @@ unity_matrix = [
* @param vector A 2d or 3d vectorm
* @returns Magnitude of the vector.
*/
function vector_magnitude(vector) =
function vector_magnitude(vector) =
sqrt(vector.x^2 + vector.y^2 + (len(vector) == 3 ? vector.z^2 : 0));
/**
@ -121,6 +166,8 @@ function affine_translate(vector) = [
* Centered on origin.
*/
module sweep_rounded(width=10, length=10) {
assert(width > 0 && length > 0);
half_width = width/2;
half_length = length/2;
path_points = [

313
gridfinity-rebuilt-baseplate.scad
View file

@ -18,9 +18,9 @@ $fs = 0.25;
/* [General Settings] */
// number of bases along x-axis
gridx = 5;
gridx = 1;
// number of bases along y-axis
gridy = 5;
gridy = 1;
/* [Screw Together Settings - Defaults work for M3 and 4-40] */
// screw diameter
@ -48,11 +48,11 @@ fity = 0; // [-1:0.1:1]
/* [Styles] */
// baseplate styles
style_plate = 0; // [0: thin, 1:weighted, 2:skeletonized, 3: screw together, 4: screw together minimal]
style_plate = 3; // [0: thin, 1:weighted, 2:skeletonized, 3: screw together, 4: screw together minimal]
// hole styles
style_hole = 2; // [0:none, 1:countersink, 2:counterbore]
style_hole = 0; // [0:none, 1:countersink, 2:counterbore]
/* [Magnet Hole] */
// Baseplate will have holes for 6mm Diameter x 2mm high magnets.
@ -67,64 +67,163 @@ hole_options = bundle_hole_options(refined_hole=false, magnet_hole=enable_magnet
// ===== IMPLEMENTATION ===== //
color("tomato")
gridfinityBaseplate(gridx, gridy, l_grid, distancex, distancey, style_plate, hole_options, style_hole, fitx, fity);
gridfinityBaseplate([gridx, gridy], l_grid, [distancex, distancey], style_plate, hole_options, style_hole, [fitx, fity]);
// ===== CONSTRUCTION ===== //
module gridfinityBaseplate(gridx, gridy, length, dix, diy, sp, hole_options, sh, fitx, fity) {
/**
* @brief Create a baseplate.
* @param grid_size_bases Number of Gridfinity bases.
* 2d Vector. [x, y].
* Set to [0, 0] to auto calculate using min_size_mm.
* @param length X,Y size of a single Gridfinity base.
* @param min_size_mm Minimum size of the baseplate. [x, y]
* Extra space is filled with solid material.
* Enables "Fit to Drawer."
* @param sp Baseplate Style
* @param hole_options
* @param sh Style of screw hole allowing the baseplate to be mounted to something.
* @param fit_offset Determines where padding is added.
*/
module gridfinityBaseplate(grid_size_bases, length, min_size_mm, sp, hole_options, sh, fit_offset = [0, 0]) {
assert(gridx > 0 || dix > 0, "Must have positive x grid amount!");
assert(gridy > 0 || diy > 0, "Must have positive y grid amount!");
assert(is_list(grid_size_bases) && len(grid_size_bases) == 2,
"grid_size_bases must be a 2d list");
assert(is_list(min_size_mm) && len(min_size_mm) == 2,
"min_size_mm must be a 2d list");
assert(is_list(fit_offset) && len(fit_offset) == 2,
"fit_offset must be a 2d list");
assert(grid_size_bases.x > 0 || min_size_mm.x > 0,
"Must have positive x grid amount!");
assert(grid_size_bases.y > 0 || min_size_mm.y > 0,
"Must have positive y grid amount!");
gx = gridx == 0 ? floor(dix/length) : gridx;
gy = gridy == 0 ? floor(diy/length) : gridy;
dx = max(gx*length-bp_xy_clearance, dix);
dy = max(gy*length-bp_xy_clearance, diy);
additional_height = calculate_offset(sp, hole_options[1], sh);
off = calculate_offset(sp, hole_options[1], sh);
// Final height of the baseplate. In mm.
baseplate_height_mm = additional_height + BASEPLATE_LIP_MAX.y;
offsetx = dix < dx ? 0 : (gx*length-bp_xy_clearance-dix)/2*fitx*-1;
offsety = diy < dy ? 0 : (gy*length-bp_xy_clearance-diy)/2*fity*-1;
// Final size in number of bases
grid_size = [for (i = [0:1])
grid_size_bases[i] == 0 ? floor(min_size_mm[i]/length) : grid_size_bases[i]];
// Final size of the base before padding. In mm.
grid_size_mm = concat(grid_size * length, [baseplate_height_mm]);
// Final size, including padding. In mm.
size_mm = [
max(grid_size_mm.x, min_size_mm.x),
max(grid_size_mm.y, min_size_mm.y),
baseplate_height_mm
];
// Amount of padding needed to fit to a specific drawer size. In mm.
padding_mm = size_mm - grid_size_mm;
is_padding_needed = padding_mm != [0, 0, 0];
//Convert the fit offset to percent of how much will be added to the positive axes.
// -1 : 1 -> 0 : 1
fit_percent_positive = [for (i = [0:1]) (fit_offset[i] + 1) / 2];
padding_start_point = -grid_size_mm/2 -
[
padding_mm.x * (1 - fit_percent_positive.x),
padding_mm.y * (1 - fit_percent_positive.y),
-grid_size_mm.z/2
];
corner_points = [
padding_start_point + [size_mm.x, size_mm.y, 0],
padding_start_point + [0, size_mm.y, 0],
padding_start_point,
padding_start_point + [size_mm.x, 0, 0],
];
echo(str("Number of Grids per axes (X, Y)]: ", grid_size));
echo(str("Final size (in mm): ", size_mm));
if (is_padding_needed) {
echo(str("Padding +X (in mm): ", padding_mm.x * fit_percent_positive.x));
echo(str("Padding -X (in mm): ", padding_mm.x * (1 - fit_percent_positive.x)));
echo(str("Padding +Y (in mm): ", padding_mm.y * fit_percent_positive.y));
echo(str("Padding -Y (in mm): ", padding_mm.y * (1 - fit_percent_positive.y)));
}
screw_together = sp == 3 || sp == 4;
minimal = sp == 0 || sp == 4;
difference() {
translate([offsetx,offsety,h_base])
mirror([0,0,1])
rounded_rectangle(dx, dy, h_base+off, r_base);
union() {
// Baseplate itself
pattern_linear(grid_size.x, grid_size.y, length) {
// Single Baseplate piece
difference() {
if (minimal) {
square_baseplate_lip(additional_height);
} else {
solid_square_baseplate(additional_height);
}
gridfinityBase(gx, gy, length, 1, 1, bundle_hole_options(), 0.5, false);
// Bottom/through pattern for the solid baseplates.
if (sp == 1) {
cutter_weight();
} else if (sp == 2 || sp == 3) {
translate([0,0,-TOLLERANCE])
linear_extrude(additional_height + (2 * TOLLERANCE))
profile_skeleton();
}
translate([offsetx,offsety,h_base-0.6])
rounded_rectangle(dx*2, dy*2, h_base*2, r_base);
// Add holes to the solid baseplates.
hole_pattern(){
// Manget hole
translate([0, 0, additional_height+TOLLERANCE])
mirror([0, 0, 1])
block_base_hole(hole_options);
pattern_linear(gx, gy, length) {
render(convexity = 6) {
translate([0,0,-TOLLERANCE])
if (sh == 1) {
cutter_countersink();
} else if (sh == 2) {
cutter_counterbore();
}
}
}
}
if (sp == 1)
translate([0,0,-off])
cutter_weight();
else if (sp == 2 || sp == 3)
linear_extrude(10*(h_base+off), center = true)
profile_skeleton();
else if (sp == 4)
translate([0,0,-5*(h_base+off)])
rounded_square(length-2*r_c2-2*r_c1, 10*(h_base+off), r_fo3);
// Padding
if (is_padding_needed) {
render()
difference() {
translate(padding_start_point)
cube(size_mm);
hole_pattern(){
mirror([0, 0, 1])
block_base_hole(hole_options);
translate([0,0,-off-TOLLERANCE])
if (sh == 1) cutter_countersink();
else if (sh == 2) cutter_counterbore();
translate([
-grid_size_mm.x/2,
-grid_size_mm.y/2,
0
])
cube(grid_size_mm);
}
}
}
screw_together = sp == 3 || sp == 4;
if (screw_together) cutter_screw_together(gx, gy, off);
}
// Round the outside corners (Including Padding)
for(i = [0:len(corner_points) - 1]) {
point = corner_points[i];
translate([
point.x + (BASEPLATE_OUTSIDE_RADIUS * -sign(point.x)),
point.y + (BASEPLATE_OUTSIDE_RADIUS * -sign(point.y)),
0
])
rotate([0, 0, i*90])
square_baseplate_corner(additional_height, true);
}
if (screw_together) {
translate([0, 0, additional_height/2])
cutter_screw_together(grid_size.x, grid_size.y, length);
}
}
}
function calculate_offset(style_plate, enable_magnet, style_hole) =
@ -182,23 +281,115 @@ module cutter_counterbore(){
}
}
module profile_skeleton() {
l = l_grid-2*r_c2-2*r_c1;
minkowski() {
difference() {
square([l-2*r_skel+2*d_clear,l-2*r_skel+2*d_clear], center = true);
pattern_circular(4)
translate([l_grid/2-d_hole_from_side,l_grid/2-d_hole_from_side,0])
minkowski() {
square([l,l]);
circle(MAGNET_HOLE_RADIUS+r_skel+2);
}
}
circle(r_skel);
/**
* @brief Added or removed from the baseplate to square off or round the corners.
* @param height Baseplate's height, excluding lip and clearance height.
* @param subtract If the corner should be scaled to allow subtraction.
*/
module square_baseplate_corner(height=0, subtract=false) {
assert(height >= 0);
assert(is_bool(subtract));
subtract_ammount = subtract ? TOLLERANCE : 0;
translate([0, 0, -subtract_ammount])
linear_extrude(height + BASEPLATE_LIP_MAX.y + (2 * subtract_ammount))
difference() {
square(BASEPLATE_OUTSIDE_RADIUS + subtract_ammount , center=false);
// TOLLERANCE needed to prevent a gap
circle(r=BASEPLATE_OUTSIDE_RADIUS - TOLLERANCE);
}
}
module cutter_screw_together(gx, gy, off) {
/**
* @brief Outer edge/lip of the baseplate.
* @details Includes clearance to ensure the base touches the lip
* instead of the bottom.
* @param height Baseplate's height excluding lip and clearance height.
* @param width How wide a single baseplate is. Only set if deviating from the standard!
* @param length How long a single baseplate is. Only set if deviating from the standard!
*/
module baseplate_lip(height=0, width=l_grid, length=l_grid) {
assert(height >= 0);
// How far, in the +x direction,
// the lip 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 = BASEPLATE_OUTSIDE_RADIUS - BASEPLATE_LIP_MAX.x;
additional_height = height + BASEPLATE_CLEARANCE_HEIGHT;
sweep_rounded(width-2*BASEPLATE_OUTSIDE_RADIUS, length-2*BASEPLATE_OUTSIDE_RADIUS)
translate([translation_x, additional_height, 0])
polygon(concat(BASEPLATE_LIP, [
[0, -additional_height],
[BASEPLATE_LIP_MAX.x, -additional_height],
[BASEPLATE_LIP_MAX.x, 0]
]));
}
/**
* @brief Outer edge/lip of the baseplate, with square corners.
* @details Needed to prevent gaps when joining multiples together.
* @param height Baseplate's height excluding lip and clearance height.
* @param size Width/Length of a single baseplate. Only set if deviating from the standard!
*/
module square_baseplate_lip(height=0, size = l_grid) {
assert(height >= 0 && size/2 >= BASEPLATE_OUTSIDE_RADIUS);
corner_center_distance = size/2 - BASEPLATE_OUTSIDE_RADIUS;
render(convexity = 2) // Fixes ghosting in preview
union() {
baseplate_lip(height, size, size);
pattern_circular(4)
translate([corner_center_distance, corner_center_distance, 0])
square_baseplate_corner(height);
}
}
/**
* @brief A single baseplate with square corners, a solid inner section, lip and the set clearance height.
* @param height Baseplate's height excluding lip and clearance height.
* @param size Width/Length of a single baseplate. Only set if deviating from the standard!
* @details A height of zero is the equivalent of just calling square_baseplate_lip()
*/
module solid_square_baseplate(height=0, size = l_grid) {
assert(height >= 0 && size > 0);
union() {
square_baseplate_lip(height, size);
if (height > 0) {
linear_extrude(height)
square(size - BASEPLATE_OUTSIDE_RADIUS, center=true);
}
}
}
/**
* @brief 2d Cutter to skeletonize the baseplate.
* @param size Width/Length of a single baseplate. Only set if deviating from the standard!
* @example difference(){
* cube(large_number);
* linear_extrude(large_number+TOLLERANCE)
* profile_skeleton();
* }
*/
module profile_skeleton(size=l_grid) {
l = size - 2*BASEPLATE_LIP_MAX.x;
offset(r_skel)
difference() {
square(l-2*r_skel, center = true);
hole_pattern()
offset(MAGNET_HOLE_RADIUS+r_skel+2)
square([l,l]);
}
}
module cutter_screw_together(gx, gy, size = l_grid) {
screw(gx, gy);
rotate([0,0,90])
@ -206,10 +397,10 @@ module cutter_screw_together(gx, gy, off) {
module screw(a, b) {
copy_mirror([1,0,0])
translate([a*l_grid/2, 0, -off/2])
pattern_linear(1, b, 1, l_grid)
translate([a*size/2, 0, 0])
pattern_linear(1, b, 1, size)
pattern_linear(1, n_screws, 1, d_screw_head + screw_spacing)
rotate([0,90,0])
cylinder(h=l_grid/2, d=d_screw, center = true);
cylinder(h=size/2, d=d_screw, center = true);
}
}

16
gridfinity-spiral-vase.scad
View file

@ -161,7 +161,7 @@ module gridfinityBaseVase() {
intersection() {
block_base_blank(0);
translate([0,0,-h_base-1])
rounded_rectangle(l_grid-0.5-0.005, l_grid-0.5-0.005, h_base*10, r_fo1+0.001);
rounded_square([l_grid-0.5-0.005, l_grid-0.5-0.005, h_base*10], r_fo1+0.001, center=true);
}
translate([0,0,0.01])
difference() {
@ -219,13 +219,17 @@ module block_magnet_blank(o = 0, half = true) {
module block_base_blank(o = 0) {
mirror([0,0,1]) {
hull() {
rounded_square(l_grid-o-0.05-2*r_c2-2*r_c1, h_base, r_fo3);
rounded_square(l_grid-o-0.05-2*r_c2, h_base-r_c1, r_fo2);
linear_extrude(h_base)
rounded_square(l_grid-o-0.05-2*r_c2-2*r_c1, r_fo3, center=true);
linear_extrude(h_base-r_c1)
rounded_square(l_grid-o-0.05-2*r_c2, r_fo2, center=true);
}
hull() {
rounded_square(l_grid-o-0.05-2*r_c2, r_c2, r_fo2);
linear_extrude(r_c2)
rounded_square(l_grid-o-0.05-2*r_c2, r_fo2, center=true);
mirror([0,0,1])
rounded_square(l_grid-o-0.05, d_bottom, r_fo1);
linear_extrude(d_bottom)
rounded_square(l_grid-o-0.05, r_fo1, center=true);
}
}
}
@ -523,7 +527,7 @@ module transform_scoop() {
module block_vase(h = d_height*2) {
translate([0,0,-0.1])
rounded_rectangle(gridx*l_grid-0.5-nozzle, gridy*l_grid-0.5-nozzle, h, r_base+0.01-nozzle/2);
rounded_square([gridx*l_grid-0.5-nozzle, gridy*l_grid-0.5-nozzle, h], r_base+0.01-nozzle/2, center=true);
}
module profile_x(x_f = 3) {

42
standard.scad
View file

@ -88,8 +88,11 @@ h_lip = 3.548;
d_wall2 = r_base-r_c1-d_clear*sqrt(2);
d_magic = -2*d_clear-2*d_wall+d_div;
// Stacking Lip
// ****************************************
// Stacking Lip Constants
// Based on https://gridfinity.xyz/specification/
// ****************************************
stacking_lip_inner_slope_height_mm = 0.7;
stacking_lip_wall_height_mm = 1.8;
stacking_lip_outer_slope_height_mm = 1.9;
@ -106,8 +109,40 @@ stacking_lip_support_wall_height_mm = 1.2;
stacking_lip_support_height_mm =
stacking_lip_support_wall_height_mm + d_wall2;
// ****************************************
// Baseplate constants
// Based on https://gridfinity.xyz/specification/
// ****************************************
BASEPLATE_OUTSIDE_RADIUS = 8 / 2;
// Polygon describing the raw baseplate lip.
// Does NOT include clearance height.
BASEPLATE_LIP = [
[0, 0], // Innermost bottom point
[0.7, 0.7], // Up and out at a 45 degree angle
[0.7, (0.7+1.8)], // Straight up
[(0.7+2.15), (0.7+1.8+2.15)], // Up and out at a 45 degree angle
[(0.7+2.15), 0], // Straight down
[0, 0] //Back to start
];
// Height of the baseplate lip.
// This ads clearance height to the polygon
// that ensures the base makes contact with the baseplate lip.
BASEPLATE_LIP_HEIGHT = 5;
// The minimum height between the baseplate lip and anything below it.
// Needed to make sure the base always makes contact with the baseplate lip.
BASEPLATE_CLEARANCE_HEIGHT = BASEPLATE_LIP_HEIGHT - BASEPLATE_LIP[3].y;
assert(BASEPLATE_CLEARANCE_HEIGHT > 0, "Negative clearance doesn't make sense.");
// Maximum [x,y] values/size of the baseplate lip.
// Includes clearance height!
BASEPLATE_LIP_MAX = [BASEPLATE_LIP[3].x, BASEPLATE_LIP_HEIGHT];
// ****************************************
// Weighted Baseplate
// ****************************************
// Baseplate bottom part height (part added with weigthed=true)
bp_h_bot = 6.4;
@ -121,6 +156,9 @@ bp_rcut_width = 8.5;
bp_rcut_length = 4.25;
// Baseplate bottom cutout rounded thingy depth
bp_rcut_depth = 2;
// ****************************************
// Baseplate clearance offset
bp_xy_clearance = 0.5;
// radius of cutout for skeletonized baseplate