fr0sty1 / openscad_shelves Goto Github PK

We currently have zero clearance on the slots in the back (since they are made by doing a difference() between a solid back and the shelves/supports.

Ideally there would be a 'margin' clearance between these parts (just as there is a margin in the shelf/support slots). Using projection() to get the outline of the tabs, offset to grow them by 'margin' and taking the difference with a back square() we can get proper clearances.

Rough draft:

module back_slots() {
offset(delta=margin) projection(cut=true) translate([...]) rotate([...]) union() {sides(); supports();}
}

module back() {
translate(...) rotate(...) linear_extrued(depth) difference() {
square([h,w]);
back_slots();
}

This card has slots cut +/- the configured board+margin value to determine optimum parameters based on differences in actual material thickness, kerf of cutting tool, etc.

The vertical supports are not currently held in place by the back of the unit. Add slots/tabs to retain the shelves and prevent vertical movement.