gridfinity-rebuilt-openscad/gridfinity-rebuilt-baseplate.scad
Arthur Moore 388cb8dbab Fix baseplate not rendering
Simplified profile_skeleton() by using `offset` instead of `minovsky`.
This is much less computationally expensive, and easier to understand.
2024-05-02 09:21:28 -04:00

220 lines
6.7 KiB
OpenSCAD

include <gridfinity-rebuilt-utility.scad>
include <standard.scad>
use <gridfinity-rebuilt-holes.scad>
// ===== INFORMATION ===== //
/*
IMPORTANT: rendering will be better for analyzing the model if fast-csg is enabled. As of writing, this feature is only available in the development builds and not the official release of OpenSCAD, but it makes rendering only take a couple seconds, even for comically large bins. Enable it in Edit > Preferences > Features > fast-csg
https://github.com/kennetek/gridfinity-rebuilt-openscad
*/
// ===== PARAMETERS ===== //
/* [Setup Parameters] */
$fa = 8;
$fs = 0.25;
/* [General Settings] */
// number of bases along x-axis
gridx = 5;
// number of bases along y-axis
gridy = 5;
/* [Screw Together Settings - Defaults work for M3 and 4-40] */
// screw diameter
d_screw = 3.35;
// screw head diameter
d_screw_head = 5;
// screw spacing distance
screw_spacing = .5;
// number of screws per grid block
n_screws = 1; // [1:3]
/* [Fit to Drawer] */
// minimum length of baseplate along x (leave zero to ignore, will automatically fill area if gridx is zero)
distancex = 0;
// minimum length of baseplate along y (leave zero to ignore, will automatically fill area if gridy is zero)
distancey = 0;
// where to align extra space along x
fitx = 0; // [-1:0.1:1]
// where to align extra space along y
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]
// hole styles
style_hole = 2; // [0:none, 1:countersink, 2:counterbore]
/* [Magnet Hole] */
// Baseplate will have holes for 6mm Diameter x 2mm high magnets.
enable_magnet = true;
// Magnet holes will have crush ribs to hold the magnet.
crush_ribs = true;
// Magnet holes will have a chamfer to ease insertion.
chamfer_holes = true;
hole_options = bundle_hole_options(refined_hole=false, magnet_hole=enable_magnet, screw_hole=false, crush_ribs=crush_ribs, chamfer=chamfer_holes, supportless=false);
// ===== IMPLEMENTATION ===== //
color("tomato")
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) {
assert(gridx > 0 || dix > 0, "Must have positive x grid amount!");
assert(gridy > 0 || diy > 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);
off = calculate_offset(sp, hole_options[1], sh);
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;
difference() {
translate([offsetx,offsety,h_base])
mirror([0,0,1])
rounded_rectangle(dx, dy, h_base+off, r_base);
gridfinityBase(gx, gy, length, 1, 1, bundle_hole_options(), 0.5, false);
translate([offsetx,offsety,h_base-0.6])
rounded_rectangle(dx*2, dy*2, h_base*2, r_base);
pattern_linear(gx, gy, length) {
render(convexity = 6) {
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);
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();
}
}
}
screw_together = sp == 3 || sp == 4;
if (screw_together) cutter_screw_together(gx, gy, off);
}
}
function calculate_offset(style_plate, enable_magnet, style_hole) =
assert(style_plate >=0 && style_plate <=4)
let (screw_together = style_plate == 3 || style_plate == 4)
screw_together ? 6.75 :
style_plate==0 ? 0 :
style_plate==1 ? bp_h_bot :
calculate_offset_skeletonized(enable_magnet, style_hole);
function calculate_offset_skeletonized(enable_magnet, style_hole) =
h_skel + (enable_magnet ? MAGNET_HOLE_DEPTH : 0) +
(
style_hole==0 ? d_screw :
style_hole==1 ? BASEPLATE_SCREW_COUNTERSINK_ADDITIONAL_RADIUS : // Only works because countersink is at 45 degree angle!
BASEPLATE_SCREW_COUNTERBORE_HEIGHT
);
module cutter_weight() {
union() {
linear_extrude(bp_cut_depth*2,center=true)
square(bp_cut_size, center=true);
pattern_circular(4)
translate([0,10,0])
linear_extrude(bp_rcut_depth*2,center=true)
union() {
square([bp_rcut_width, bp_rcut_length], center=true);
translate([0,bp_rcut_length/2,0])
circle(d=bp_rcut_width);
}
}
}
module hole_pattern(){
pattern_circular(4)
translate([l_grid/2-d_hole_from_side, l_grid/2-d_hole_from_side, 0]) {
render();
children();
}
}
module cutter_countersink(){
screw_hole(SCREW_HOLE_RADIUS + d_clear, 2*h_base,
false, BASEPLATE_SCREW_COUNTERSINK_ADDITIONAL_RADIUS);
}
module cutter_counterbore(){
screw_radius = SCREW_HOLE_RADIUS + d_clear;
counterbore_height = BASEPLATE_SCREW_COUNTERBORE_HEIGHT + 2*LAYER_HEIGHT;
union(){
cylinder(h=2*h_base, r=screw_radius);
difference() {
cylinder(h = counterbore_height, r=BASEPLATE_SCREW_COUNTERBORE_RADIUS);
make_hole_printable(screw_radius, BASEPLATE_SCREW_COUNTERBORE_RADIUS, counterbore_height);
}
}
}
/**
* @brief 2d Cutter to skeletonize the baseplate.
* @example difference(){
* cube(large_number);
* linear_extrude(large_number+TOLLERANCE)
* profile_skeleton();
* }
*/
module profile_skeleton() {
l = l_grid-2*r_c2-2*r_c1;
offset(r_skel)
difference() {
square(l-2*r_skel+2*d_clear, center = true);
hole_pattern()
offset(MAGNET_HOLE_RADIUS+r_skel+2)
square([l,l]);
}
}
module cutter_screw_together(gx, gy, off) {
screw(gx, gy);
rotate([0,0,90])
screw(gy, gx);
module screw(a, b) {
copy_mirror([1,0,0])
translate([a*l_grid/2, 0, -off/2])
pattern_linear(1, b, 1, l_grid)
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);
}
}