diff options
| -rw-r--r-- | gridfinity.scad | 40 |
1 files changed, 37 insertions, 3 deletions
diff --git a/gridfinity.scad b/gridfinity.scad index 585abd3..c3e8e0d 100644 --- a/gridfinity.scad +++ b/gridfinity.scad @@ -92,30 +92,64 @@ module cutout_slot(l, rx = 0) { rotate([rx,-90,0]) linear_extrude(l) polygon([[0,-0.25],[0,0.25],[0.25,0]]); } +// Cut out a cross with edges sloped like the rounded corners of the base +module cutout_cross() { + r = rounding + 0.25; + + difference() { + linear_extrude(0.25) square([r * 2, r * 2], center=true); + union() { + for(c = [[r,r], [r,-r], [-r,r], [-r,-r]]) translate(c) hull() { + linear_extrude(0.01) circle(rounding); + translate([0,0,0.25]) linear_extrude(0.01) circle(rounding + 0.25); + } + } + } +} + module bottom_cutout(units_x, units_y) { if (units_y > 1) for (i = [1:units_y - 1]) { - translate([units_x * width - width/2, i * width - width/2, 4.749]) cutout_slot(width * units_x); + translate([units_x * width - width/2, i * width - width/2, 4.749]) + cutout_slot(width * units_x); } if(units_x > 1) for (i = [1:units_x - 1]) { - translate([i * width - width/2, units_y * width - width/2, 4.749]) cutout_slot(width * units_y, rx=90); + translate([i * width - width/2, units_y * width - width/2, 4.749]) + cutout_slot(width * units_y, rx=90); + } + + for (ux = [0:units_x]) { + for (uy = [0:units_y]) { + // we don't need the cross in the corners + if (!( (ux == 0 && uy == 0 ) || + (ux == units_x && uy == units_y) || + (ux == 0 && uy == units_y) || + (ux == units_x && uy == 0 ) )) + translate([ux * width - width/2, uy * width - width/2, 4.749]) cutout_cross(); + } } } module gridfinity(units_x, units_y, units_z, lip = true, magnets = false) { + // Bases for (ux = [0:units_x -1]) { for (uy = [0:units_y -1]) { translate([ux * width, uy * width,0]) base(magnets = magnets); } } + + // Solid Block if (units_z > 0) { difference() { translate([coord_centered(units_x), coord_centered(units_y), 4.75]) { extr = units_z * height - 4.75; - linear_extrude(extr) rounded_square(units_x * width - 0.5, units_y * width - 0.5, rounding); + linear_extrude(extr) + rounded_square(units_x * width - 0.5, units_y * width - 0.5, rounding); } bottom_cutout(units_x, units_y); } } + + // Stacking Lip if (lip && units_z > 0) // Just to safeguard. h=0 is not intended to be used with lip. translate([coord_centered(units_x), coord_centered(units_y), units_z * height]) stacking_lip(units_x, units_y); |