gridfinity-rebuilt-openscad/gridfinity-rebuilt-baseplate.scad

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include <gridfinity-rebuilt-utility.scad>
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include <standard.scad>
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// ===== INFORMATION ===== //
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/*
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
*/
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// ===== PARAMETERS ===== //
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/* [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;
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/* [Screw Together Settings - Defaults work for M3 and 4-40] */
// screw diameter
d_screw = 3.35;
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// screw head diameter
d_screw_head = 5;
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// screw spacing distance
screw_spacing = .5;
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// number of screws per grid block
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n_screws = 1; // [1:3]
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/* [Fit to Drawer] */
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// minimum length of baseplate along x (leave zero to ignore, will automatically fill area if gridx is zero)
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distancex = 0;
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// minimum length of baseplate along y (leave zero to ignore, will automatically fill area if gridy is zero)
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distancey = 0;
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// 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] */
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// baseplate styles
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style_plate = 0; // [0: thin, 1:weighted, 2:skeletonized, 3: screw together, 4: screw together minimal]
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// enable magnet hole
enable_magnet = true;
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// hole styles
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style_hole = 2; // [0:none, 1:countersink, 2:counterbore]
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// ===== IMPLEMENTATION ===== //
screw_together = (style_plate == 3 || style_plate == 4);
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color("tomato")
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gridfinityBaseplate(gridx, gridy, l_grid, distancex, distancey, style_plate, enable_magnet, style_hole, fitx, fity);
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// ===== CONSTRUCTION ===== //
module gridfinityBaseplate(gridx, gridy, length, dix, diy, sp, sm, 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;
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dx = max(gx*length-bp_xy_clearance, dix);
dy = max(gy*length-bp_xy_clearance, diy);
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off = calculate_off(sp, sm, sh);
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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, 0, 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) {
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render(convexity = 6) {
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if (sp == 1)
translate([0,0,-off])
cutter_weight();
else if (sp == 2 || sp == 3)
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linear_extrude(10*(h_base+off), center = true)
profile_skeleton();
else if (sp == 4)
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translate([0,0,-5*(h_base+off)])
rounded_square(length-2*r_c2-2*r_c1, 10*(h_base+off), r_fo3);
hole_pattern(){
if (sm) block_base_hole(1);
translate([0,0,-off])
if (sh == 1) cutter_countersink();
else if (sh == 2) cutter_counterbore();
}
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}
}
if (sp == 3 || sp ==4) cutter_screw_together(gx, gy, off);
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}
}
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function calculate_off(sp, sm, sh) =
screw_together
? 6.75
:sp==0
?0
: sp==1
?bp_h_bot
:h_skel + (sm
?h_hole
: 0)+(sh==0
? d_screw
: sh==1
?d_cs
:h_cb);
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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() {
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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)
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translate([l_grid/2-d_hole_from_side, l_grid/2-d_hole_from_side, 0]) {
render();
children();
}
}
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module cutter_countersink(){
cylinder(r = r_hole1+d_clear, h = 100*h_base, center = true);
translate([0,0,d_cs])
mirror([0,0,1])
hull() {
cylinder(h = d_cs+10, r=r_hole1+d_clear);
translate([0,0,d_cs])
cylinder(h=d_cs+10, r=r_hole1+d_clear+d_cs);
}
}
module cutter_counterbore(){
cylinder(h=100*h_base, r=r_hole1+d_clear, center=true);
difference() {
cylinder(h = 2*(h_cb+0.2), r=r_cb, center=true);
copy_mirror([0,1,0])
translate([-1.5*r_cb,r_hole1+d_clear+0.1,h_cb-h_slit])
cube([r_cb*3,r_cb*3, 10]);
}
}
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)
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translate([l_grid/2-d_hole_from_side,l_grid/2-d_hole_from_side,0])
minkowski() {
square([l,l]);
circle(r_hole2+r_skel+2);
}
}
circle(r_skel);
}
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}
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])
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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])
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cylinder(h=l_grid/2, d=d_screw, center = true);
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}
}