6 lid_thinboxbase_overlap = 5;
7 lid_fatbox_overlap = 12;
11 lid_fatbox_switches_h = 6+2;
13 lid_max_switches_w = 70;
14 lid_switches_y_slop = 3;
37 lid_rail_behindslop = 0.5;
42 lid_thinboxbase_overlap + lid_fatbox_h + lid_fatbox_switches_h;
43 lid_inner_min_h = lid_fatbox_overlap + lid_fatbox_switches_h;
45 lid_inner_kink = [thinbox_len, thinbox_len*2];
47 lid_inner_w_nom = patbox_side;
48 lid_inner_w = lid_inner_w_nom + lid_side_slop * 2;
50 lid_seatline_w = (lid_inner_w - lid_max_switches_w)/2 - lid_switches_y_slop;
52 lid_seatline_h = lid_fatbox_switches_h;
56 peg_main_height = peg_straight_len + (peg_max_dia - peg_main_dia)/2/peg_slope;
58 echo(peg_main_height);
60 thinbox_front_z = lid_fatbox_switches_h + lid_fatbox_h - lid_thinbox_h;
62 module LidSideProfile(){
63 polygon([[-lid_top_wall, lid_inner_max_h],
64 [lid_inner_kink[0], lid_inner_max_h],
65 [lid_inner_kink[1], lid_inner_min_h],
66 [total_len, lid_inner_min_h],
67 [total_len, -lid_front_wall],
68 [-lid_top_wall, -lid_front_wall]]);
72 yt_base = thinbox_front_z;
73 yt = yt_base - lid_rail_behindslop;
74 pegx = (lid_inner_w - patbox_centres)/2;
77 [pegx - peg_main_dia/2, yt],
78 [pegx - peg_main_dia/2, yt_base - peg_straight_len],
80 yt_base - peg_straight_len - (pegx - peg_main_dia/2)/peg_slope
85 overlap = [0.1, 0.1, 0.1];
89 linear_extrude(height= lid_side_wall)
94 cube(overlap + [total_len, lid_seatline_w, lid_seatline_h]);
97 translate([-0.1, -0.1, -lid_front_wall])
98 cube([total_len+0.1, lid_inner_w/2 + 0.2, lid_front_wall]);
101 translate([-lid_top_wall, -lid_side_wall, -lid_front_wall])
102 cube([lid_top_wall, lid_inner_w/2 + 10, lid_front_wall + lid_inner_max_h]);
106 translate([0,0,-0.1])
107 linear_extrude(height=100.1) //todo
112 polygon([[-peg_engage_depth, (peg_engage_dia - peg_outer_slop)/2],
113 [0, (peg_engage_dia - peg_outer_slop)/2],
114 [0, (peg_main_dia - peg_outer_slop)/2],
115 [peg_straight_len, (peg_main_dia - peg_outer_slop)/2],
116 [peg_main_height, (peg_max_dia - peg_outer_slop)/2],
117 [peg_main_height+peg_top_thick, (peg_max_dia - peg_outer_slop)/2],
118 [peg_main_height+peg_top_thick, (peg_inner_dia + peg_inner_slop)/2],
119 [-peg_engage_depth, (peg_inner_dia + peg_inner_slop)/2]]);
123 rotate_extrude($fn=50)
128 module AtFixingCentres(){
130 translate([patbox_side/2 + fc*patbox_centres/2,
137 module TopPattressBox(){
139 translate([0,0, -lid_thinbox_h])
140 cube([patbox_side, patbox_side, lid_thinbox_h]);
142 translate([0,0,-10]) cylinder(r=peg_engage_dia/2, h=20);
148 translate([0, -lid_inner_w/2, 0]) LidSide();
149 translate([0,0, lid_fatbox_h])
150 rotate([0,180,0]) translate([0, -patbox_side/2, 0])
151 rotate([0,0,90]) union(){
153 color("blue") AtFixingCentres(){
154 rotate([180,0,0]) Peg();