22 ply_edge_hole_dist = ply_edge_min + ply_hole_dia/2;
24 echo(str("HOLES IN PLY ctr dist from edge = ", ply_edge_hole_dist));
26 hole_slop = (ply_hole_dia - post_dia)/2;
27 tile_hard_edge_hole_dist = ply_edge_hole_dist + hole_slop;
28 thehd = [ tile_hard_edge_hole_dist, tile_hard_edge_hole_dist ];
33 cylinder(r= post_dia/2, h= tile_th + ply_th - post_shorter);
34 translate([0,0, tile_th]) {
35 cylinder(r= screw_big_dia/2, h= screw_big_len);
36 cylinder(r= screw_dia/2, h= ply_th, $fn=20);
44 translate([p[0], p[1], 0])
49 module TileBase(botleft_post, topright_post){
50 botleft = botleft_post - thehd;
51 size = topright_post - botleft_post + thehd * 2;
53 translate([botleft[0], botleft[1], 0])
54 cube([size[0], size[1], tile_th]);
57 module RoundEdge(left_post, right_post) {
58 length_vec = right_post - left_post;
59 length = dist2d([0,0], length_vec);
60 length_uvec = length_vec / length;
61 ortho_uvec = [ -length_uvec[1], length_uvec[0] ];
62 m = [ [ length_uvec[0], ortho_uvec[0], 0, left_post[0], ],
63 [ length_uvec[1], ortho_uvec[1], 0, left_post[1], ],
66 tlength = length + thehd[1] * 2;
68 translate([-thehd[1], -thehd[0], -round_edge_rad]){
71 cylinder(r= round_edge_rad, h= tlength, $fn=50);
72 translate([-1, 0, -20])
73 cube([tlength+2, 20, 20]);
79 module RoundLeftCorner(this_post, right_post) {
80 length_vec = right_post - this_post;
81 length_uvec = length_vec - dist2d([0,0], length_vec);
82 ortho_uvec = [ -length_uvec[1], length_uvec[0] ];
83 m = [ [ length_uvec[0], ortho_uvec[0], 0, this_post[0], ],
84 [ length_uvec[1], ortho_uvec[1], 0, this_post[1], ],
88 translate([-thehd[1], -thehd[0], -round_edge_rad]){
90 sphere(r= round_edge_rad, $fn=60);
102 TileBase(holes[0], holes[1]);
104 RoundEdge(holes[0], holes[1]);
105 RoundEdge(holes[0] + [ 0, 0.1 ], holes[0]);
106 RoundLeftCorner(holes[0], holes[1]);