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1 | // challenge-bot |
2 | // GNU AGPLv3 (or later at your option) |
3 | // project available at these locations: |
4 | // https://gitorious.org/ozzloy/challenge-bot |
5 | // https://github.com/waynegramlich/challenge-bot |
6 | |
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7 | // use 10 ish for development, 60 or so for printing |
8 | $fn = 60; |
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9 | |
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10 | standoff_radius = 14.732 / 2; // 0.580 / 2 inches from spec sheet |
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11 | standoff_height = 48; // eyeballed |
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12 | |
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13 | // eyeballed caster flange height, (0.580/5) inches, times 2 to be stronger |
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14 | caster_flange_height = 5; |
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15 | caster_flange_width = 20.32; // 0.800 inches |
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16 | caster_flange_screw_radius = 2.286 / 2; // 0.090 inches |
17 | caster_flange_screw_length = 8; // eyeballed |
18 | |
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19 | deck_grid_width = 25.4; // measured center to center on grid on pegboard |
20 | deck_flange_height = 2.9464; |
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21 | deck_flange_screw_radius = 3.556 / 2; // For #6 machine screws |
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22 | deck_flange_radius = (deck_grid_width) / 2 + deck_flange_screw_radius + 3; |
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23 | |
24 | module deck_flange(){ |
25 | difference(){ |
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26 | cylinder(h = deck_flange_height, r = deck_flange_radius); |
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27 | for(ii = [-1, 1]){ |
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28 | translate([deck_grid_width / 2 * ii, 0, -.1]) |
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29 | cylinder(h = deck_flange_height * 1.1, |
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30 | r = deck_flange_screw_radius); |
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31 | translate([0, deck_grid_width / 2 * ii, -.1]) |
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32 | cylinder(h = deck_flange_height * 1.1, |
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33 | r = deck_flange_screw_radius);}}} |
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34 | |
35 | module deck_flange_reinforcement(){ |
36 | translate([-deck_flange_radius, |
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37 | -.5 * deck_flange_height / 2, |
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38 | deck_flange_height]){ |
39 | difference (){ |
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40 | cube([deck_flange_radius, deck_flange_height / 2, deck_flange_radius]); |
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41 | translate([-.1, -.05 * deck_flange_height, 0]){ |
42 | rotate([0, -45, 0]){ |
43 | cube([deck_flange_radius * 1.5, // 1.5 is bigger than sqrt(2) |
44 | deck_flange_height * 1.1, // 1.1 is bigger than 1 |
45 | deck_flange_radius]);}}}}} |
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46 | |
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47 | module ball_holder(){ |
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48 | difference (){ |
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49 | cylinder(r = holder_radius, h = holder_height); |
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50 | translate([0, 0, ball_radius + wall_thickness]){ |
51 | sphere(r = ball_radius);} |
52 | translate([0, 0, holder_height / 2 + wall_thickness]){ |
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53 | cube([holder_diameter + 0.1, |
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54 | wall_thickness * 2, |
55 | holder_height], |
56 | center = true);}}} |
57 | |
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58 | module caster_standoff(){ |
59 | cylinder(h = standoff_height, |
60 | r = standoff_radius); |
61 | deck_flange(); |
62 | for(ii = [0:3]){ |
63 | rotate([0, 0, 45 + 90 * ii]) |
64 | deck_flange_reinforcement();} |
65 | translate([0, 0, standoff_height]){ |
66 | ball_holder();}} |
67 | |
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68 | //caster_standoff(); |
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69 | ball_holder(); |