59 lines
2.3 KiB
OpenSCAD
59 lines
2.3 KiB
OpenSCAD
//
|
|
// NopSCADlib Copyright Chris Palmer 2018
|
|
// nop.head@gmail.com
|
|
// hydraraptor.blogspot.com
|
|
//
|
|
// This file is part of NopSCADlib.
|
|
//
|
|
// NopSCADlib is free software: you can redistribute it and/or modify it under the terms of the
|
|
// GNU General Public License as published by the Free Software Foundation, either version 3 of
|
|
// the License, or (at your option) any later version.
|
|
//
|
|
// NopSCADlib is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
|
|
// without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
|
|
// See the GNU General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU General Public License along with NopSCADlib.
|
|
// If not, see <https://www.gnu.org/licenses/>.
|
|
//
|
|
|
|
//
|
|
//! When square holes are cut with a CNC bit they get rounded corners. If it is important that
|
|
//! a square cornered part fits in the hole then circles are placed in the corners making a bone shape.
|
|
//
|
|
include <../utils/core/core.scad>
|
|
|
|
module dogbone_square(size, r = cnc_bit_r, center = true, x_offset, y_offset) //! Square with circles at the corners, with optional offsets
|
|
{
|
|
x_offset = is_undef(x_offset) ? r / sqrt(2) : x_offset;
|
|
y_offset = is_undef(y_offset) ? r / sqrt(2) : y_offset;
|
|
|
|
union() {
|
|
square(size, center = center);
|
|
|
|
if(r > 0) {
|
|
origin = center ? [0, 0] : size / 2;
|
|
|
|
for(x = [-1, 1], y = [-1, 1])
|
|
translate(origin + [x * (size.x / 2 - x_offset), y * (size.y / 2 - y_offset)])
|
|
drill(r, 0);
|
|
}
|
|
}
|
|
}
|
|
|
|
module dogbone_rectangle(size, r = cnc_bit_r, center = true, xy_center = true, x_offset, y_offset) //! Rectangle with cylinders at the corners
|
|
{
|
|
extrude_if(h = size.z, center = center)
|
|
dogbone_square([size.x, size.y], r, xy_center, x_offset, y_offset);
|
|
}
|
|
|
|
module dogbone_rectangle_x(size, r = cnc_bit_r, center = true, xy_center = true) //! Rectangle with cylinders at the corners, offset in the x direction
|
|
{
|
|
dogbone_rectangle(size = size, r = r, center = center, x_offset = 0, y_offset = r);
|
|
}
|
|
|
|
module dogbone_rectangle_y(size, r = cnc_bit_r, center = true, xy_center = true) //! Rectangle with cylinders at the corners, offset in the y direction
|
|
{
|
|
dogbone_rectangle(size = size, r = r, center = center, x_offset = r, y_offset = 0);
|
|
}
|