| 1 |
|
1 |
|
| 2 |
x_holes = 3; |
2 |
x_holes = 3; |
| 3 |
y_holes = 4; |
3 |
y_holes = 4; |
| 4 |
pedestal_height = 12; // designed for use the MLAB standard 20mm screws. |
4 |
pedestal_height = 9; // designed for use the MLAB standard 20mm screws. |
| 5 |
|
5 |
|
| 6 |
MLAB_grid = 10.16; |
6 |
MLAB_grid = 10.16; |
| 7 |
thickness = 1; // thickness of bottom belt |
7 |
thickness = 1; // thickness of bottom belt |
| 8 |
pile_radius = 4; // radius of pile around screw |
8 |
pile_radius = 4; // radius of pile around screw |
| 9 |
x_size = x_holes * MLAB_grid ; |
9 |
x_size = x_holes * MLAB_grid ; |
| 10 |
y_size = y_holes * MLAB_grid ; |
10 |
y_size = y_holes * MLAB_grid ; |
| 11 |
mount_hole = 3.5; |
11 |
mount_hole = 3.5; |
| 12 |
//nut_size = 6.8; //size suitable for PLA material |
12 |
//nut_size = 6.8; //size suitable for PLA material |
| 13 |
nut_size = 6.7; //size suitable for ABS material |
13 |
nut_size = 6.7; //size suitable for ABS material |
| 14 |
clear = 0.175; |
14 |
clear = 0.175; |
| 15 |
|
15 |
|
| 16 |
|
16 |
|
| 17 |
|
17 |
|
| 18 |
|
18 |
|
| 19 |
MLAB_grid_xoffset = MLAB_grid/2; |
19 |
MLAB_grid_xoffset = MLAB_grid/2; |
| 20 |
MLAB_grid_yoffset = MLAB_grid/2; |
20 |
MLAB_grid_yoffset = MLAB_grid/2; |
| 21 |
|
21 |
|
| 22 |
grid_list = [for (j = [MLAB_grid_xoffset : MLAB_grid: x_size], i = [MLAB_grid_yoffset :MLAB_grid: y_size]) |
22 |
grid_list = [for (j = [MLAB_grid_xoffset : MLAB_grid: x_size], i = [MLAB_grid_yoffset :MLAB_grid: y_size]) |
| 23 |
if ((j>(x_size-10) && i>(y_size-10)) || (j<10 && i<10) || (j<10 && i>(y_size-10)) || (j>(x_size-10) && i<10) ) [j, i] ]; |
23 |
if ((j>(x_size-10) && i>(y_size-10)) || (j<10 && i<10) || (j<10 && i>(y_size-10)) || (j>(x_size-10) && i<10) ) [j, i] ]; |
| 24 |
|
24 |
|
| 25 |
|
25 |
|
| 26 |
difference () { |
26 |
difference () { |
| 27 |
union () { |
27 |
union () { |
| 28 |
for (j = grid_list) { |
28 |
for (j = grid_list) { |
| 29 |
translate (concat(j, [0])) |
29 |
translate (concat(j, [0])) |
| 30 |
cylinder (h = pedestal_height, r= pile_radius, $fn=20); |
30 |
cylinder (h = pedestal_height, r= pile_radius, $fn=20); |
| 31 |
} |
31 |
} |
| 32 |
|
32 |
|
| 33 |
translate ([MLAB_grid_xoffset , MLAB_grid_yoffset , 0]) |
33 |
translate ([MLAB_grid_xoffset , MLAB_grid_yoffset , 0]) |
| 34 |
minkowski() { |
34 |
minkowski() { |
| 35 |
cube([x_size - 2*(MLAB_grid/2 - pile_radius) - 2*pile_radius, y_size - 2*(MLAB_grid/2 - pile_radius) - 2*pile_radius, thickness]); // base plastics brick |
35 |
cube([x_size - 2*(MLAB_grid/2 - pile_radius) - 2*pile_radius, y_size - 2*(MLAB_grid/2 - pile_radius) - 2*pile_radius, thickness]); // base plastics brick |
| 36 |
cylinder(r=pile_radius,h=0.1); |
36 |
cylinder(r=pile_radius,h=0.1); |
| 37 |
} |
37 |
} |
| 38 |
} |
38 |
} |
| 39 |
|
39 |
|
| 40 |
translate ([2*pile_radius, 2*pile_radius, 0]) // central hole in module support |
40 |
translate ([2*pile_radius, 2*pile_radius, 0]) // central hole in module support |
| 41 |
cube([x_size-4*pile_radius, y_size-4*pile_radius, 2*thickness]); |
41 |
cube([x_size-4*pile_radius, y_size-4*pile_radius, 2*thickness]); |
| 42 |
|
42 |
|
| 43 |
// MLAB grid holes |
43 |
// MLAB grid holes |
| 44 |
for (j = grid_list) { |
44 |
for (j = grid_list) { |
| 45 |
translate (concat(j, [0])) |
45 |
translate (concat(j, [0])) |
| 46 |
cylinder (h = 3, r= (nut_size+clear)/2, $fn=6); |
46 |
cylinder (h = 3, r= (nut_size+clear)/2, $fn=6); |
| 47 |
translate (concat(j, [3.2])) // one solid layer for slicer (the holes will be pierced on demand ) |
47 |
translate (concat(j, [3.2])) // one solid layer for slicer (the holes will be pierced on demand ) |
| 48 |
cylinder (h = pedestal_height, r= mount_hole/2, $fn=10); |
48 |
cylinder (h = pedestal_height, r= mount_hole/2, $fn=10); |
| 49 |
} |
49 |
} |
| 50 |
} |
50 |
} |
| 51 |
|
51 |
|