Commit | Line | Data |
---|---|---|
cae0d928 CE |
1 | // Simple cover for a mosquito bacillus thuringiensis trap |
2 | ||
3 | // UV radiation may slowly kill the bt... so use an opaque container | |
4 | // and cover it with a lid with a smaller hole in it. Might help | |
5 | // control evaporation as well, and it helps not having open | |
6 | // containers of water around (probably don't want wild animals | |
7 | // drinking a soup of decaying bug larvaue). | |
8 | ||
9 | // The trap itself is just water, orange blossom water (which contains | |
10 | // skatole... I think) as an attractant, and some bt granules or | |
11 | // dunks. | |
12 | ||
13 | $fa = 0.1; | |
14 | $fs = 0.5; | |
15 | ||
16 | module mosquito_honeypot_lid (lid_diameter = 50, lid_depth = 15, hole_width = 20, wall_thickness = 1, bottom_thickness = 2) | |
17 | { | |
18 | total_h = lid_depth + bottom_thickness; | |
19 | difference () { | |
20 | cylinder (d = lid_diameter + wall_thickness*2, h = total_h, center = true); | |
21 | translate ([0, 0, bottom_thickness/2 + 1/2]) | |
22 | #cylinder (d = lid_diameter, h = lid_depth+1, center = true); | |
23 | ||
24 | translate ([0, 0, -lid_depth/2]) | |
25 | cube ([hole_width, hole_width, bottom_thickness*4], center = true); | |
26 | } | |
27 | } | |
28 | ||
29 | // wall thickness calculation halves value | |
30 | //mosquito_honeypot_lid (lid_diameter=72.5, lid_depth=18, wall_thickness=4, bottom_thickness=2); | |
31 | ||
32 | ||
33 | mosquito_honeypot_lid (lid_diameter=71, lid_depth=25, wall_thickness=2, bottom_thickness=2, hole_width=25); |