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1 | /* GNU AGPLv3 (or later at your option) |
2 | see bottom for more license info */ |
3 | |
4 | /* measurements from misumi's 3030 aluminum extrusion data sheet |
5 | https://us.misumi-ec.com/pdf/fa/2012/p2_0545.pdf |
6 | */ |
7 | |
8 | x = 30; |
9 | y = 30; |
10 | diagonal = sqrt(pow(30/2, 2) + pow(30/2, 2)); |
11 | opening_width = 8; |
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12 | inner_block = 12; |
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13 | |
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14 | corner_block_inner = (30 - 16.5) / 2; |
15 | wall = 2; |
16 | |
17 | $fn = 40; |
18 | |
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19 | module arm_half(){ |
20 | square(inner_block / 2); |
21 | rotate(45) { |
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22 | square([diagonal - wall, wall / 2]); } |
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23 | translate([x / 2 - corner_block_inner, y / 2 - corner_block_inner]) { |
24 | square(corner_block_inner - wall); } |
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25 | translate([opening_width / 2 + wall, y / 2 - wall]) { |
26 | square([(x - opening_width) / 2 - 2 * wall, wall]); |
27 | translate([0, wall / 2]){ |
28 | circle(d = wall); } } |
29 | translate([x / 2 - wall, y / 2 - wall]) { |
30 | circle(wall); } } |
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31 | |
32 | arms = 4; |
33 | for(arm = [0:arms - 1]) { |
34 | rotate(arm * 360 / arms) { |
35 | arm_half(); |
36 | mirror(){ arm_half(); } } } |
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37 | |
38 | /* |
39 | This file is part of 3d-printables. |
40 | |
41 | 3d-printables is free software: you can redistribute it and/or modify |
42 | it under the terms of the GNU Affero General Public License as published by |
43 | the Free Software Foundation, either version 3 of the License, or |
44 | (at your option) any later version. |
45 | |
46 | 3d-printables is distributed in the hope that it will be useful, |
47 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
48 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
49 | GNU Affero General Public License for more details. |
50 | |
51 | You should have received a copy of the GNU Affero General Public License |
52 | along with challenge-bot. If not, see <http://www.gnu.org/licenses/>. |
53 | */ |