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
9 strap_width = 26.75 + 0.7;
18 holder_attach_near_wall = 5;
20 holder_attach_xsz = 5;
21 holder_ctie_width = 4.0 + 0.5;
22 holder_ctie_thick = 3.0 + 0.5;
23 holder_attach_walls = 3;
24 holder_attach_roof = 2.5;
26 holder_corner_round = 2.0;
30 // from careful measurement
33 [[ 6, [0.6, 6.0], [1.6, 12.3] ],
34 [ 8, [1.1, 6.2], [1.9, 12.5] ],
35 [ 10, [1.6, 6.5], [2.1, 12.8] ],
36 [ 12, [1.8, 6.6], [2.3, 12.7] ],
37 [ 14, [2.1, 6.8], [2.6, 13.0] ],
38 [ 16, [2.4, 6.9], [2.7, 13.2] ],
39 [ 18, [2.5, 7.0], [2.9, 13.3] ],
40 [ 22, [3.1, 7.1], [3.2, 13.4] ],
41 [ 26, [3.3, 7.2], [3.5, 13.6] ],
44 crewpunch_shaft_max_y = 7.5;
46 crewpunch_systematic_size_error = +0.36;
48 crewpunch_smallest_shape = crewpunch_shape[0];
49 crewpunch_biggest_shape = crewpunch_shape[len(crewpunch_shape)-1];
51 crewpunch_skew_angle = 3.5; //degrees
52 crewpunch_skew_yoff = +1.1; //mm
56 punch_dx = 0.5 * (-crewpunch_biggest_shape[2][0]
57 +crewpunch_biggest_shape[2][1]);
58 punch_dy = 0.5 * (+crewpunch_biggest_shape[1][1]
59 -crewpunch_biggest_shape[1][0]) + crewpunch_skew_yoff;
61 attach_ysz = holder_attach_walls*2 + holder_ctie_width;
63 holder_block_zsz = crewpunch_biggest_shape[0] - crewpunch_smallest_shape[0];
64 holder_xsz = crewpunch_biggest_shape[2][0] + crewpunch_biggest_shape[2][1] +
67 holder_skewangle_yextra = holder_xsz/2 * sin(abs(crewpunch_skew_angle));
69 holder_max_y = punch_dy + crewpunch_biggest_shape[1][0] + holder_min_wall
70 + crewpunch_systematic_size_error + holder_skewangle_yextra;
72 holder_attach_max_y = punch_dy
73 - max(crewpunch_biggest_shape[1][1], crewpunch_shaft_max_y)
74 - crewpunch_systematic_size_error - holder_skewangle_yextra;
76 holder_block_min_y = punch_dy
77 - crewpunch_biggest_shape[1][1] - holder_attach_near_wall +
78 - crewpunch_systematic_size_error - holder_skewangle_yextra;
80 holder_all_min_y = holder_attach_max_y - attach_ysz;
82 jig_max_y = max(holder_max_y + main_slop, strap_width/2) + edgewall_width;
83 jig_min_y = min(holder_all_min_y - main_slop, -strap_width/2) - edgewall_width;
85 jig_main_zsz = holder_block_zsz + punch_travel;
89 include <belt-cut-jig-common.scad>
94 ourslop = crewpunch_slop - crewpunch_systematic_size_error;
96 for(layer=crewpunch_shape){
97 translate([0,0, layer[0]]){
98 for(xind=[0,1]) //translate([xind?0:1,0,0])
99 for(yind=[0,1]) //translate([0,yind?0.5:0,0])
100 mirror([xind?1:0,0,0]) mirror([0,yind?0:1,0]){
101 translate([-0.1,-0.1,-0.1])
102 cube([0.1 + layer[2][xind] + ourslop,
103 0.1 + layer[1][1-yind] + ourslop,
111 module MaybeRoundedCube(sizes, roundedness){
112 if (roundedness > 0) {
113 translate([roundedness, roundedness, 0]){
115 cube([sizes[0] - roundedness*2,
116 sizes[1] - roundedness*2,
118 cylinder(h=0.05, r=roundedness, $fn=20);
126 module PunchHolder(cutouts=true){
127 roundedness = cutouts ? holder_corner_round : 0;
129 translate([-holder_xsz/2, holder_block_min_y, 0])
130 MaybeRoundedCube([holder_xsz,
131 holder_max_y - holder_block_min_y,
135 rotate([0,0,-crewpunch_skew_angle])
138 -crewpunch_smallest_shape[0]])
142 translate([-holder_attach_xsz/2, holder_all_min_y, 0])
143 MaybeRoundedCube([holder_attach_xsz,
145 holder_block_zsz + punch_travel
146 + holder_ctie_thick + holder_attach_roof + 1],
150 holder_all_min_y + holder_attach_walls,
151 holder_block_zsz + punch_travel])
152 cube([60, holder_ctie_width, holder_ctie_thick]);
156 module OneJigCutout(){
158 cube([main_slop*2, main_slop*2, 50], center=true);
163 module JigT(){ ////toplevel
167 module PunchHolderT(){ ////toplevel
171 module Demo(){ ////toplevel
176 module Kit(){ ////toplevel
179 translate([(jig_iters-1)*jig_interval/2,
180 jig_min_y - holder_max_y - 5,
188 //PunchHolder(false);
193 //RegistrationProtrusion();