4 // various registration marks
5 // protrustions at ends at strap width and middle
6 // grooves on top face at 1/4,1/2,3/4 length and 1/2 width
11 holder_attach_near_wall = 3;
13 holder_attach_xsz = 5;
14 holder_ctie_width = 4.0 + 0.5;
15 holder_ctie_thick = 2.0 + 0.5;
16 holder_attach_walls = 3;
17 holder_attach_roof = 2.5;
28 jig_max_len = 160; // print diagonally
31 registrationgroove_width = 0.8;
32 registrationgroove_depth = 1.2;
34 // from careful measurement
37 [[ 6, [0.6, 6.0], [1.6, 12.3] ],
38 [ 8, [1.1, 6.2], [1.9, 12.5] ],
39 [ 10, [1.6, 6.5], [2.1, 12.8] ],
40 [ 12, [1.8, 6.6], [2.3, 12.7] ],
41 [ 14, [2.1, 6.8], [2.6, 13.0] ],
42 [ 16, [2.4, 6.9], [2.7, 13.2] ]];
44 crewpunch_shaft_max_y = 7.5;
46 crewpunch_systematic_size_error = +0.36;
48 crewpunch_min_y = 4.7 - crewpunch_systematic_size_error;
50 crewpunch_smallest_shape = crewpunch_shape[0];
51 crewpunch_biggest_shape = crewpunch_shape[len(crewpunch_shape)-1];
55 attach_ysz = holder_attach_walls*2 + holder_ctie_width;
56 holder_front_all = crewpunch_shaft_max_y - crewpunch_biggest_shape[1][1]
59 holder_block_zsz = crewpunch_biggest_shape[0] - crewpunch_smallest_shape[0];
60 holder_xsz = crewpunch_biggest_shape[2][0] + crewpunch_biggest_shape[2][1] +
63 crewpunch_biggest_shape[1][0] + crewpunch_biggest_shape[1][1];
64 holder_ysz = crewpunch_biggest_y + holder_min_wall + holder_front_all;
66 attach_offset = 0.5 * (holder_front_all - holder_attach_near_wall);
68 jig_main_zsz = holder_block_zsz + punch_travel;
72 jig_iters = (jig_max_len - jig_ends_extra) / jig_interval;
78 ourslop = crewpunch_slop - crewpunch_systematic_size_error;
80 for(layer=crewpunch_shape){
81 translate([0,0, layer[0]]){
82 for(xind=[0,1]) //translate([xind?0:1,0,0])
83 for(yind=[0,1]) //translate([0,yind?0.5:0,0])
84 mirror([xind?1:0,0,0]) mirror([0,yind?0:1,0]){
85 translate([-0.1,-0.1,-0.1])
86 cube([0.1 + layer[2][xind] + ourslop,
87 0.1 + layer[1][yind] + ourslop,
95 module PunchHolder(cutouts=true){
96 translate([-holder_xsz/2,
97 -holder_ysz + holder_min_wall + crewpunch_biggest_y/2,
100 translate([0,attach_offset,0])
101 cube([holder_xsz, holder_ysz - attach_offset, holder_block_zsz]);
103 translate([crewpunch_biggest_shape[2][1] + holder_min_wall,
104 crewpunch_biggest_shape[1][0] + holder_front_all,
105 -crewpunch_smallest_shape[0]])
109 translate([holder_xsz/2 - holder_attach_xsz/2, 0, 0])
110 cube([holder_attach_xsz,
112 holder_block_zsz + punch_travel
113 + holder_ctie_thick + holder_attach_roof + 1]);
117 holder_block_zsz + punch_travel])
118 cube([60, holder_ctie_width, holder_ctie_thick]);
123 module RegistrationGroove(l){
124 // runs along the +ve X axis for length l but at correct z pos
125 translate([0, 0, jig_main_zsz + 0.1]) {
127 linear_extrude(height=l)
128 polygon([[-registrationgroove_width/2, 0],
129 [ +registrationgroove_width/2, 0],
130 [ 0, -registrationgroove_depth ]]);
136 translate([-(jig_interval/2 + 1),
137 -(strap_width/2 + edgewall_width) - attach_offset,
139 cube([jig_interval + 2,
140 strap_width + edgewall_width*2 + attach_offset,
141 jig_main_zsz + strap_thick]);
143 cube([main_slop*2, main_slop*2, 50], center=true);
146 translate([-100, -strap_width/2, -10])
147 cube([200, strap_width, 10]);
148 translate([-100,0,0])
149 RegistrationGroove(200);
150 for (xfrac=[-1/4,0,+1/4])
151 translate([jig_interval * xfrac, -100, 0])
153 RegistrationGroove(200);
158 for (i=[0:jig_iters-1]) {
159 translate([jig_interval * i, 0, 0])
171 //PunchHolder(false);