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Added screw_keyhole() module.

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Chris 2023-01-07 10:50:32 +00:00
parent cec8c3a107
commit 8587d52d1b
2 changed files with 14 additions and 0 deletions
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readme.md
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@ -3348,6 +3348,7 @@ For an explanation of `screw_polysink()` see <https://hydraraptor.blogspot.com/2
| `screw(type, length, hob_point = 0, nylon = false)` | Draw specified screw, optionally hobbed or nylon |
| `screw_and_washer(type, length, star = false, penny = false)` | Screw with a washer which can be standard or penny and an optional star washer on top |
| `screw_countersink(type, drilled = true)` | Countersink shape |
| `screw_keyhole(type, h = 0)` | Make keyhole slot to accept and retain screw head |
| `screw_polysink(type, h = 100, alt = false, sink = 0)` | A countersink hole made from stacked polyholes for printed parts, default is flush, `sink` can be used to recess the head |
![screws](tests/png/screws.png)

13
vitamins/screw.scad
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@ -328,6 +328,19 @@ module screw_polysink(type, h = 100, alt = false, sink = 0) { //! A countersink
}
}
module screw_keyhole(type, h = 0) { //! Make keyhole slot to accept and retain screw head
r = screw_head_radius(type);
extrude_if(h) {
translate([0, - 2 * r])
drill(r + 0.5, 0);
hull()
for(y = [0, -2 * r])
translate([0, y])
drill(screw_clearance_radius(type), 0);
}
}
module screw_and_washer(type, length, star = false, penny = false) { //! Screw with a washer which can be standard or penny and an optional star washer on top
washer = screw_washer(type);
head_type = screw_head_type(type);