LibFile: screw_drive.scad
Masks for Phillips, Torx and square (Robertson) driver holes.
To use, add the following lines to the beginning of your file:
include <BOSL2/std.scad>
include <BOSL2/screw_drive.scad>
File Contents
-
phillips_mask()– Creates a mask for a Philips screw drive. [Geom]phillips_depth()– Returns the depth a phillips recess needs to be for a given diameter.phillips_diam()– Returns the diameter of a phillips recess of a given depth.
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hex_drive_mask()– Creates a mask for a hex drive recess. [Geom]
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torx_mask()– Creates a mask for a torx drive recess. [Geom]torx_mask2d()– Creates the 2D cross section for a torx drive recess. [Geom]torx_info()– Returns the dimensions of a torx drive.torx_diam()– Returns the diameter of a torx drive.torx_depth()– Returns the typical depth of a torx drive recess.
-
Section: Robertson/Square Drives
robertson_mask()– Creates a mask for a Robertson/Square drive recess. [Geom]
Section: Phillips Drive
Module: phillips_mask()
Synopsis: Creates a mask for a Philips screw drive. [Geom]
See Also: hex_drive_mask(), phillips_depth(), phillips_diam(), torx_mask(), robertson_mask()
Usage:
- phillips_mask(size) [ATTACHMENTS];
Description:
Creates a mask for creating a Phillips drive recess given the Phillips size. Each mask can be lowered to different depths to create different sizes of recess.
Arguments:
| By Position | What it does |
|---|---|
size |
The size of the bit as an integer or string. "#0", "#1", "#2", "#3", or "#4" |
| By Name | What it does |
|---|---|
anchor |
Translate so anchor point is at origin (0,0,0). See anchor. Default: CENTER |
spin |
Rotate this many degrees around the Z axis after anchor. See spin. Default: 0 |
orient |
Vector to rotate top towards, after spin. See orient. Default: UP |
Example 1:
include <BOSL2/std.scad>
include <BOSL2/screw_drive.scad>
xdistribute(10) {
phillips_mask(size="#1");
phillips_mask(size="#2");
phillips_mask(size=3);
phillips_mask(size=4);
}
Function: phillips_depth()
Synopsis: Returns the depth a phillips recess needs to be for a given diameter.
See Also: phillips_mask(), hex_drive_mask(), phillips_diam(), torx_mask()
Usage:
- depth = phillips_depth(size, d);
Description:
Returns the depth of the Phillips recess required to produce the specified diameter, or undef if not possible.
Arguments:
| By Position | What it does |
|---|---|
size |
size as a number or text string like "#2" |
d |
desired diameter |
Function: phillips_diam()
Synopsis: Returns the diameter of a phillips recess of a given depth.
See Also: phillips_mask(), hex_drive_mask(), phillips_depth(), torx_mask()
Usage:
- diam = phillips_diam(size, depth);
Description:
Returns the diameter at the top of the Phillips recess when constructed at the specified depth, or undef if that depth is not valid.
Arguments:
| By Position | What it does |
|---|---|
size |
size as number or text string like "#2" |
depth |
depth of recess to find the diameter of |
Section: Hex drive
Module: hex_drive_mask()
Synopsis: Creates a mask for a hex drive recess. [Geom]
See Also: phillips_mask(), torx_mask(), phillips_depth(), phillips_diam(), robertson_mask()
Usage:
- hex_drive_mask(size, length, [anchor], [spin], [orient], [$slop]) [ATTACHMENTS];
Description:
Creates a mask for hex drive. Note that the hex recess specs requires
a slightly oversized recess. You can use $slop to increase the size by
2 * $slop if necessary.
Section: Torx Drive
Module: torx_mask()
Synopsis: Creates a mask for a torx drive recess. [Geom]
See Also: phillips_mask(), hex_drive_mask(), phillips_depth(), phillips_diam(), robertson_mask()
Usage:
- torx_mask(size, l, [center]) [ATTACHMENTS];
Description:
Creates a torx bit tip. The anchors are located on the circumscribing cylinder. See torx_info() for allowed sizes.
Arguments:
| By Position | What it does |
|---|---|
size |
Torx size. |
l |
Length of bit. |
center |
If true, centers mask vertically. |
| By Name | What it does |
|---|---|
anchor |
Translate so anchor point is at origin (0,0,0). See anchor. Default: CENTER |
spin |
Rotate this many degrees around the Z axis after anchor. See spin. Default: 0 |
orient |
Vector to rotate top towards, after spin. See orient. Default: UP |
Example 1:
include <BOSL2/std.scad>
include <BOSL2/screw_drive.scad>
torx_mask(size=30, l=10, $fa=1, $fs=1);
Module: torx_mask2d()
Synopsis: Creates the 2D cross section for a torx drive recess. [Geom]
See Also: phillips_mask(), hex_drive_mask(), torx_mask(), phillips_depth(), phillips_diam(), torx_info(), robertson_mask()
Usage:
- torx_mask2d(size);
Description:
Creates a torx bit 2D profile. The anchors are located on the circumscribing circle. See torx_info() for allowed sizes.
Arguments:
| By Position | What it does |
|---|---|
size |
Torx size. |
Example 1:
include <BOSL2/std.scad>
include <BOSL2/screw_drive.scad>
torx_mask2d(size=30, $fa=1, $fs=1);
Function: torx_info()
Synopsis: Returns the dimensions of a torx drive.
See Also: phillips_mask(), hex_drive_mask(), torx_mask(), phillips_depth(), phillips_diam()
Usage:
- info = torx_info(size);
Description:
Get the typical dimensional info for a given Torx size. Returns a list containing, in order:
- Outer Diameter
- Inner Diameter
- Drive Hole Depth
- External Tip Rounding Radius
- Inner Rounding Radius
Arguments:
| By Position | What it does |
|---|---|
size |
Torx size. |
Function: torx_diam()
Synopsis: Returns the diameter of a torx drive.
See Also: phillips_mask(), hex_drive_mask(), torx_mask(), phillips_depth(), phillips_diam(), torx_info()
Usage:
- diam = torx_diam(size);
Description:
Get the typical outer diameter of Torx profile.
Arguments:
| By Position | What it does |
|---|---|
size |
Torx size. |
Function: torx_depth()
Synopsis: Returns the typical depth of a torx drive recess.
See Also: phillips_mask(), hex_drive_mask(), torx_mask(), phillips_depth(), phillips_diam(), torx_info()
Usage:
- depth = torx_depth(size);
Description:
Gets typical drive hole depth.
Arguments:
| By Position | What it does |
|---|---|
size |
Torx size. |
Section: Robertson/Square Drives
Module: robertson_mask()
Synopsis: Creates a mask for a Robertson/Square drive recess. [Geom]
See Also: phillips_mask(), hex_drive_mask(), torx_mask(), phillips_depth(), phillips_diam(), torx_info()
Usage:
- robertson_mask(size, [extra], [ang], [$slop=]);
Description:
Creates a mask for creating a Robertson/Square drive recess given the drive size as an integer.
The width of the recess will be oversized by 2 * $slop. Note that this model is based
on an incomplete spec. https://www.aspenfasteners.com/content/pdf/square_drive_specification.pdf
We determined the angle by doing print tests on a Prusa MK3S with $slop set to 0.05.
Arguments:
| By Position | What it does |
|---|---|
size |
The size of the square drive, as an integer from 0 to 4. |
extra |
Extra length of drive mask to create. |
ang |
taper angle of each face. Default: 2.5 |
| By Name | What it does |
|---|---|
$slop |
enlarge recess by this twice amount. Default: 0 |
anchor |
Translate so anchor point is at origin (0,0,0). See anchor. Default: TOP |
spin |
Rotate this many degrees around the Z axis after anchor. See spin. Default: 0 |
orient |
Vector to rotate top towards, after spin. See orient. Default: UP |
Side Effects:
- Sets tag to "remove" if no tag is set.
Example 1:
include <BOSL2/std.scad>
include <BOSL2/screw_drive.scad>
robertson_mask(size=2);
Example 2:
include <BOSL2/std.scad>
include <BOSL2/screw_drive.scad>
difference() {
cyl(d1=2, d2=8, h=4, anchor=TOP);
robertson_mask(size=2);
}