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 = 3.0 + 0.5;
16 holder_attach_walls = 3;
17 holder_attach_roof = 2.5;
20 strap_width = 26.75 + 0.7;
28 jig_max_len = 160; // print diagonally
31 registrationgroove_width = 0.8;
32 registrationgroove_depth = 1.2;
34 registrationprotrusion_poke = 3;
35 registrationprotrusion_slope = 0.75;
39 // from careful measurement
42 [[ 6, [0.6, 6.0], [1.6, 12.3] ],
43 [ 8, [1.1, 6.2], [1.9, 12.5] ],
44 [ 10, [1.6, 6.5], [2.1, 12.8] ],
45 [ 12, [1.8, 6.6], [2.3, 12.7] ],
46 [ 14, [2.1, 6.8], [2.6, 13.0] ],
47 [ 16, [2.4, 6.9], [2.7, 13.2] ],
48 [ 18, [2.5, 7.0], [2.9, 13.3] ],
49 [ 22, [3.1, 7.1], [3.2, 13.4] ],
50 [ 26, [3.3, 7.2], [3.5, 13.6] ],
53 crewpunch_shaft_max_y = 7.5;
55 crewpunch_systematic_size_error = +0.36;
57 crewpunch_min_y = 4.7 - crewpunch_systematic_size_error;
59 crewpunch_smallest_shape = crewpunch_shape[0];
60 crewpunch_biggest_shape = crewpunch_shape[len(crewpunch_shape)-1];
62 crewpunch_skew_angle = 2.0; //degrees
66 attach_ysz = holder_attach_walls*2 + holder_ctie_width;
67 holder_front_all = crewpunch_shaft_max_y - crewpunch_biggest_shape[1][1]
70 holder_block_zsz = crewpunch_biggest_shape[0] - crewpunch_smallest_shape[0];
71 holder_xsz = crewpunch_biggest_shape[2][1] + crewpunch_biggest_shape[2][0] +
74 crewpunch_biggest_shape[1][0] + crewpunch_biggest_shape[1][1];
75 holder_ysz = crewpunch_biggest_y + holder_min_wall + holder_front_all;
77 attach_offset = 0.5 * (holder_front_all - holder_attach_near_wall);
79 jig_main_zsz = holder_block_zsz + punch_travel;
83 //jig_iters = (jig_max_len - jig_ends_extra) / jig_interval;
90 ourslop = crewpunch_slop - crewpunch_systematic_size_error;
92 for(layer=crewpunch_shape){
93 translate([0,0, layer[0]]){
94 for(xind=[0,1]) //translate([xind?0:1,0,0])
95 for(yind=[0,1]) //translate([0,yind?0.5:0,0])
96 mirror([xind?1:0,0,0]) mirror([0,yind?0:1,0]){
97 translate([-0.1,-0.1,-0.1])
98 cube([0.1 + layer[2][1-xind] + ourslop,
99 0.1 + layer[1][yind] + ourslop,
107 module PunchHolder(cutouts=true){
108 translations=[-holder_xsz/2,
109 -holder_ysz + holder_min_wall + crewpunch_biggest_y/2,
111 translate(translations){
113 translate([0,attach_offset,0])
114 cube([holder_xsz, holder_ysz - attach_offset, holder_block_zsz]);
116 translate(-translations)
117 rotate([0,0,-crewpunch_skew_angle])
118 translate(translations)
119 translate([crewpunch_biggest_shape[2][0] + holder_min_wall,
120 crewpunch_biggest_shape[1][0] + holder_front_all,
121 -crewpunch_smallest_shape[0]])
125 translate([holder_xsz/2 - holder_attach_xsz/2, 0, 0])
126 cube([holder_attach_xsz,
128 holder_block_zsz + punch_travel
129 + holder_ctie_thick + holder_attach_roof + 1]);
133 holder_block_zsz + punch_travel])
134 cube([60, holder_ctie_width, holder_ctie_thick]);
139 module RegistrationGroove(l){
140 // runs along the +ve X axis for length l but at correct z pos
141 translate([0, 0, jig_main_zsz + 0.1]) {
143 linear_extrude(height=l)
144 polygon([[-registrationgroove_width/2, 0],
145 [ +registrationgroove_width/2, 0],
146 [ 0, -registrationgroove_depth ]]);
152 translate([-(jig_interval/2 + jig_overlap),
153 -(strap_width/2 + edgewall_width) - attach_offset,
155 cube([jig_interval + 2,
156 strap_width + edgewall_width*2 + attach_offset,
157 jig_main_zsz + strap_thick]);
159 cube([main_slop*2, main_slop*2, 50], center=true);
162 translate([-100, -strap_width/2, -10])
163 cube([200, strap_width, 10]);
164 translate([-100,0,0])
165 RegistrationGroove(200);
166 for (xfrac=[-1/4,0,+1/4])
167 translate([jig_interval * xfrac, -100, 0])
169 RegistrationGroove(200);
173 module RegistrationProtrusion(){
174 // points towards the positive x axis
175 xsz = registrationprotrusion_poke;
176 ysz = registrationprotrusion_poke;
177 diag_sz = xsz * sqrt(2);
178 zsz = diag_sz / registrationprotrusion_slope;
180 translate([0, 0, 0.1]){
181 linear_extrude(height=0.1)
182 polygon([[ 0, -ysz ],
185 translate([-0.1, 0, zsz ])
194 for(yfrac=[-1/2, 0, 1/2]){
196 ? jig_interval * (jig_iters - 0.5)
200 rotate([0,0, end ? 0 : 180])
201 translate([ jig_overlap, 0, 0 ])
202 RegistrationProtrusion();
205 for (i=[0:jig_iters-1]) {
206 translate([jig_interval * i, 0, 0])
211 module JigT(){ ////toplevel
216 module PunchHolderT(){ ////toplevel
227 //PunchHolder(false);
232 //RegistrationProtrusion();