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use <gridfinity.scad>
mm_1_4_inch = 6.35;
diam = mm_1_4_inch;
wall = 1.5;
bit_depth = 5;
// size in GF units
ux = 2;
uy = 2;
function r_from_d(d) = d/2 / sin(60);
function staggered_offset(d, w) = r_from_d(d)*1.5 + sin(60) * w;
function hc_max_y(max_y, d, w) = floor( max_y / (diam + wall) - 1 );
function hc_max_x(max_x, d, w) = floor( (max_x - r_from_d(d)/2 ) / (staggered_offset(d,w)) - 1 );
// d is from flat side to flat side -> wrench size
module hexagon(d) {
l = r_from_d(d);
translate([l,l]) circle(l, $fn=6);
}
// d = wrench size, w = wall
module honeycomb(cnt_x, cnt_y, d, w) {
// we want wall distance also at a 60deg angle.
x_offset = staggered_offset(d,w);
for (ix = [0:cnt_x]) {
// every second row is offset
offs = ix%2 == 1 ? (d + w) / 2 : 0;
x = x_offset * ix;
for (iy = [0 : cnt_y - ix%2]) {
y = iy * (d + w) + offs;
translate([x,y]) hexagon(d);
}
}
}
module honeycomb_fit(x, y, d, w) {
honeycomb(hc_max_x(x,d,w), hc_max_y(y,d,w), d, w);
}
module honeycomb_fit_center(x, y, d, w) {
// mostly educated guessing, certainly not perfectly center
offs_y = (y - ((hc_max_y(y, d, w) + 1) * (d+w))) /2;
offs_x = (x - (hc_max_x(x, d, w) + 1) * staggered_offset(d, w) - r_from_d(d)/2) / 2;
translate([offs_x, offs_y]) honeycomb_fit(x,y,d,w);
}
difference() {
gridfinity(ux, uy, 3, lip=true, magnets=false, fill = false, bottom_height = bit_depth);
translate(gf_inner_origin()) translate(gf_top_vec(0))
linear_extrude(bit_depth + 0.01)
honeycomb_fit_center(gf_inner(ux), gf_inner(uy), diam,wall);
}
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