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Merge pull request #39 from jazzhands/screw-together

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screw-together baseplates
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Kenneth 2022-12-30 13:47:26 -07:00 committed by GitHub
commit 183ec3e069
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1 changed files with 36 additions and 7 deletions
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gridfinity-rebuilt-baseplate.scad
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@ -22,6 +22,17 @@ gridy = 4;
// base unit
length = 42;
/* [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;
@ -31,20 +42,17 @@ distancey = 0;
/* [Styles] */
// baseplate styles
style_plate = 2; // [0: thin, 1:weighted, 2:skeletonized]
style_plate = 3; // [0: thin, 1:weighted, 2:skeletonized, 3: screw together]
// enable magnet hole
enable_magnet = true;
// hole styles
style_hole = 2; // [0:none, 1:contersink, 2:counterbore]
// ===== IMPLEMENTATION ===== //
color("tomato")
gridfinityBaseplate(gridx, gridy, length, distancex, distancey, style_plate, enable_magnet, style_hole);
gridfinityBaseplate(gridx, gridy, length, distancex, distancey, style_plate, enable_magnet);
// ===== CONSTRUCTION ===== //
@ -53,12 +61,14 @@ module gridfinityBaseplate(gridx, gridy, length, dix, diy, sp, sm, sh) {
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-0.5, dix);
dy = max(gy*length-0.5, diy);
off = (sp==0?0:sp==1?bp_h_bot:h_skel+(sm?h_hole:0)+(sh==0?0:sh==1?d_cs:h_cb));
difference() {
translate([0,0,h_base])
mirror([0,0,1])
@ -75,16 +85,19 @@ module gridfinityBaseplate(gridx, gridy, length, dix, diy, sp, sm, sh) {
if (sp == 1)
translate([0,0,-off])
cutter_weight();
else if (sp == 2)
else if (sp == 2 || sp == 3) {
linear_extrude(10*(h_base+off), center = true)
profile_skeleton();
}
translate([0,0,-off]) {
if (sh == 1) cutter_countersink();
else if (sh == 2) cutter_counterbore();
}
}
}
if (sp == 3) cutter_screw_together(gx, gy, off);
}
}
module cutter_weight() {
@ -144,4 +157,20 @@ module profile_skeleton() {
}
circle(r_skel);
}
}
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*length/2, 0, -off/2])
pattern_linear(1, b, 1, length)
pattern_linear(1, n_screws, 1, d_screw_head + screw_spacing)
rotate([0,90,0])
cylinder(h=length/2, d=d_screw, center = true);
}
}