guid.foo
My Gridfinity models
Gusset refinements for printability
Gussets on every grid boundary now instead of every other, and the outer
gussets get trimmed with a quarter-cylinder cut to match the baseplate's
corner radius so they don't poke out past the rounded edges.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
+27
-8
+27
-8
pegboard-shelf.scad
+27
-8
pegboard-shelf.scad
···
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// Gusset geometry
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gusset_depth = shelf_depth;
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-
num_gussets = max(2, floor(grid_x / 2) + 1);
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+
num_gussets = grid_x + 1;
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bp_clearance = BASEPLATE_HEIGHT * sin(shelf_angle);
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53
···
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for (i = [0 : num_gussets - 1]) {
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gx = gusset_thick/2 +
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i * (shelf_width - gusset_thick) / max(1, num_gussets - 1);
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-
translate([gx, 0, 0])
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-
gusset();
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+
difference() {
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translate([gx, 0, 0])
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gusset();
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if (i == 0)
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baseplate_corner_cut(left=true);
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if (i == num_gussets - 1)
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baseplate_corner_cut(left=false);
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}
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}
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// Backplate wall
···
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// Triangle in the Y-Z plane bridging tilted shelf to vertical backplate
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// rotate([0,90,0]) maps: polygon_x → -world_z, polygon_y → world_y
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-
// Front-bottom of tilted shelf (pulled back to not overshoot baseplate radius)
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+
// Front-bottom of tilted shelf
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by = backplate_thick + bp_clearance
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+ shelf_depth * cos(shelf_angle)
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-
- BASEPLATE_HEIGHT * sin(shelf_angle)
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-
- BASEPLATE_OUTER_RADIUS;
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+
- BASEPLATE_HEIGHT * sin(shelf_angle);
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bz = BASEPLATE_HEIGHT * (1 - cos(shelf_angle))
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-
- shelf_depth * sin(shelf_angle)
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-
+ BASEPLATE_OUTER_RADIUS * sin(shelf_angle);
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+
- shelf_depth * sin(shelf_angle);
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// Shelf underside projected back to the backplate face
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ay = backplate_thick;
···
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[-cz, cy]
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]);
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}
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+
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module baseplate_corner_cut(left) {
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R = BASEPLATE_OUTER_RADIUS;
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translate([0, backplate_thick, BASEPLATE_HEIGHT])
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rotate([-shelf_angle, 0, 0])
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translate([0, -backplate_thick, -BASEPLATE_HEIGHT])
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translate([left ? 0 : shelf_width - R,
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backplate_thick + bp_clearance + shelf_depth - R,
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+
-1])
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difference() {
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cube([R, R + 1, BASEPLATE_HEIGHT + 2]);
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translate([left ? R : 0, 0, -1])
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cylinder(r=R, h=BASEPLATE_HEIGHT + 4);
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}
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}