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https://github.com/DJSundog/NopSCADlib.git
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screw_polysink now has an alternating layer option to be more printable inverted.
The screws test now tests polysinks and has printable sample.
This commit is contained in:
Chris Palmer
parent
bf618bb482
commit
157ff60e19
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libtest.png
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libtest.png
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@ -2944,7 +2944,7 @@ For an explanation of ```screw_polysink()``` see <https://hydraraptor.blogspot.c
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| ```screw(type, length, hob_point = 0, nylon = false)``` | Draw specified screw, optionally hobbed or nylon |
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| ```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 |
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| ```screw_countersink(type, drilled = true)``` | Countersink shape |
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| ```screw_polysink(type)``` | A countersink hole made from stacked polyholes for printed parts |
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| ```screw_polysink(type, h = 100, alt = false)``` | A countersink hole made from stacked polyholes for printed parts |
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@ -2983,6 +2983,11 @@ For an explanation of ```screw_polysink()``` see <https://hydraraptor.blogspot.c
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| 1 | ```screw(No6_cs_screw, 30)``` | Screw No6 cs wood x 30mm |
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| 1 | ```screw(No6_screw, 30)``` | Screw No6 pan wood x 30mm |
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### Printed
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| Qty | Filename |
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| ---:|:--- |
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| 1 | polysink.stl |
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<a href="#top">Top</a>
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@ -18,20 +18,46 @@
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//
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include <../core.scad>
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module screws()
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for(y = [0 : len(screw_lists) -1])
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for(x = [0 : len(screw_lists[y]) -1]) {
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screw = screw_lists[y][x];
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if(screw) {
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length = screw_head_type(screw) == hs_grub ? 6
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: screw_radius(screw) <= 1.5 ? 10
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: screw_max_thread(screw) ? screw_longer_than(screw_max_thread(screw) + 5)
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: 30;
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translate([x * 20, y * 20])
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screw(screw, length);
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}
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module polysink_stl() {
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stl("polysink");
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cs_screws = [for(list = screw_lists, screw = list) if(screw_head_type(screw) == hs_cs_cap) screw];
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n = len(cs_screws);
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size = [n * 20, 20, 10];
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difference() {
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translate([-size.x / n / 2, $preview ? 0 : -size.y / 2, -size.z])
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cube($preview ? [size.x, size.y / 2, size.z] : size);
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for(i = [0 : n - 1])
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let(s = cs_screws[i])
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translate([i * 20, 0]) {
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screw_polysink(s, 2 * size.z + 1);
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translate_z(-size.z)
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screw_polysink(s, 2 * size.z + 1, alt = true);
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}
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}
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}
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module screws() {
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for(y = [0 : len(screw_lists) -1])
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for(x = [0 : len(screw_lists[y]) -1]) {
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screw = screw_lists[y][x];
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if(screw) {
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length = screw_head_type(screw) == hs_grub ? 6
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: screw_radius(screw) <= 1.5 ? 10
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: screw_max_thread(screw) ? screw_longer_than(screw_max_thread(screw) + 5)
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: 30;
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translate([x * 20, y * 20])
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screw(screw, length);
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}
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}
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translate([80, 140])
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polysink_stl();
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}
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if($preview)
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let($show_threads = true)
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screws();
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else
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polysink_stl();
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@ -276,15 +276,28 @@ function screw_polysink_r(type, z) = //! Countersink hole profile corrected for
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)
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limit(head_rad + head_t - z + (sqrt(2) - 1) * layer_height / 2, screw_clearance_radius(type), head_rad);
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module screw_polysink(type) { //! A countersink hole made from stacked polyholes for printed parts
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module screw_polysink(type, h = 100, alt = false) { //! A countersink hole made from stacked polyholes for printed parts
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head_depth = screw_head_depth(type);
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assert(head_depth, "Not a countersunk screw");
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layers = ceil(head_depth / layer_height);
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for(i = [0 : layers - 1], side = [-1, 1])
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translate_z(side * (i + 0.5) * layer_height)
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poly_cylinder(r = screw_polysink_r(type, i * layer_height + layer_height / 2), h = layer_height + 2 * eps, center = true);
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rmin = screw_clearance_radius(type);
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sides = sides(rmin);
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lh = layer_height + eps;
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render(convexity = 5)
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for(side = [0, 1]) mirror([0, 0, side]) {
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for(i = [0 : layers - 1])
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translate_z(i * layer_height) {
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r = screw_polysink_r(type, i * layer_height + layer_height / 2);
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if(alt)
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rotate(i % 2 == layers % 2 ? 180 / sides : 0)
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poly_cylinder(r = r, h = lh, center = false, sides = sides);
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else
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poly_cylinder(r = r, h = lh, center = false);
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}
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poly_cylinder(r = screw_clearance_radius(type), h = 100, center = true);
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translate_z(layers * layer_height)
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poly_cylinder(r = rmin, h = h / 2 - layers * layer_height, center = false);
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}
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}
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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
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@ -107,14 +107,14 @@ No6_screw = ["No6", "No6 pan wood", hs_pan, 3.5, 6.7, 2.2, 0, 0
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No6_cs_screw = ["No6_cs", "No6 cs wood", hs_cs, 3.5, 7.0, 0, 0, 0, 0, M4_washer, false, No6_pilot_radius, No6_clearance_radius];
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screw_lists = [
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[ M2_cap_screw, M2p5_cap_screw, M3_cap_screw, M4_cap_screw, M5_cap_screw, M6_cap_screw, M8_cap_screw],
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[ 0, 0, M3_low_cap_screw],
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[ 0, 0, M3_hex_screw, M4_hex_screw, M5_hex_screw, M6_hex_screw, M8_hex_screw],
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[ 0, M2p5_pan_screw, M3_pan_screw, M4_pan_screw, M5_pan_screw, M6_pan_screw, No632_pan_screw],
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[ 0, No2_screw, No4_screw, No6_screw, No6_cs_screw],
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[ 0, M2_cs_cap_screw,M3_cs_cap_screw, M4_cs_cap_screw],
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[ 0, M2_dome_screw, M3_dome_screw, M4_dome_screw],
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[ 0, 0, M3_grub_screw, M4_grub_screw]
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[ M2_cap_screw, M2p5_cap_screw, M3_cap_screw, M4_cap_screw, M5_cap_screw, M6_cap_screw, M8_cap_screw],
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[ 0, 0, M3_low_cap_screw],
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[ M2_cs_cap_screw, 0, M3_cs_cap_screw, M4_cs_cap_screw],
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[ M2_dome_screw, 0, M3_dome_screw, M4_dome_screw],
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[ 0, 0, M3_hex_screw, M4_hex_screw, M5_hex_screw, M6_hex_screw, M8_hex_screw],
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[ 0, M2p5_pan_screw, M3_pan_screw, M4_pan_screw, M5_pan_screw, M6_pan_screw, No632_pan_screw],
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[ No2_screw, 0, No4_screw, No6_screw, No6_cs_screw],
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[ 0, 0, M3_grub_screw, M4_grub_screw]
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];
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use <screw.scad>
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