// super simple feet for metal shelving // Created 2017 Clinton Ebadi // Released under the https://wiki.creativecommons.org/wiki/CC0 // To the extent possible under law, Clinton Ebadi has waived all // copyright and related or neighboring rights to super simple feet // for metal shelving. // preview[view:east, tilt:top diagonal] // Length of slot for shelving leg slot_length = 32; // Thickness of slot for shelving leg slot_thickness = 1.8; // Thickness of wall around slot wall_thickness = 3; // Depth of the base foot base_depth = 4; // Depth of the slot and walls around the length slot_depth = 20; // Offset for leg slot into the base slot_offset = -1; $fs = 0.1; foot (); module base () { side = slot_length + slot_thickness/2; offset (r = wall_thickness) polygon ([ [0, 0], [ side , 0], [0, side] ]); } module walls () { intersection () { offset (r = wall_thickness) { square ([slot_thickness, slot_length + slot_thickness/2]); square ([slot_length + slot_thickness/2, slot_thickness]); } base (); } } module slot () { square ([slot_thickness, slot_length]); square ([slot_length, slot_thickness]); // tiny chamfer around bend x = 2; polygon ([ [0, 0], [ slot_thickness*2+x/2, 0], [0, slot_thickness*2+x/2] ]); } module foot () { difference () { union () { linear_extrude (base_depth) base (); translate ([0, 0, base_depth+slot_offset]) linear_extrude (slot_depth+slot_offset) walls (); } translate ([0, 0, base_depth+slot_offset]) linear_extrude (slot_depth+slot_offset+0.1) slot (); } }