97 lines
No EOL
2.2 KiB
OpenSCAD
97 lines
No EOL
2.2 KiB
OpenSCAD
/*
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Silencer
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Inspired by the QuickCan Parametric Printable Silencer Tool
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quickcan.scad by Hillary Izabych. I couldn't find her or any
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way to contact her, and her project had no license.
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I modified the silencer to print a threaded portion to screw onto
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barrel threads instead of as a muzzle brake slip-on device.
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The thread should ensure better fitment and alignment, lessening
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the possibility of baffle strikes, and of course better ease of use.
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*/
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include <BOSL2/std.scad>
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include <BOSL2/screws.scad>
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test = 0; // 1 for exploded view
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$fn=36;
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// overall dimensions
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len = 200;
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out_d = 22;
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t = 2;
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bullet_hole = 6; // for .22lr 5.6mm + some spare
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// threaded portion
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th_len = 20;
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th_spec = str("1/2-20,", th_len/10); // change to your barrel thread spec
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$slop = 0.15; // For my printer, no slop results in an extremely tight thread.
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// baffles
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baf_dist = 0;
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baf_h_num = 6;
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baf_h_d1 = 2;
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baf_h_d2 = 2.6;
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// Do not modify - internal calculations
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in_d = out_d - 2*t;
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baf_len = len - th_len;
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module body() {
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difference() {
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cyl(d=out_d, h=len);
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cyl(d=in_d, h=len+0.1);
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}
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}
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module baffle() {
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difference() {
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cyl(d1=out_d, d2=0, h=out_d/2);
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down(t*sqrt(2)) cyl(d1=out_d, d2=0, h=out_d/2);
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// holes
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for(i=[0:baf_h_num]) {
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zrot(60*i) left(in_d*3/7) cyl(d=baf_h_d1, h=len);
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zrot(60*i + 30) left(in_d*3/10) cyl(d=baf_h_d2, h=len);
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}
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}
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}
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module baffles() {
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difference() {
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down(baf_len/2) for(i=[0:out_d/2 + baf_dist:baf_len-out_d]) {
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up(i) baffle();
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}
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// hole for bullet
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cyl(d=bullet_hole, h=len);
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}
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}
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module cap() {
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down(len/2) difference() {
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cyl(d=out_d, h=t);
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cyl(d=bullet_hole, h=t+1);
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}
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}
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module thread() {
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up(len/2 - th_len/2) difference() {
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cyl(h=th_len, d=out_d);
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up(th_len/2 - 1)
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screw_hole(th_spec, thread=true, head="flat small", anchor="head_bot");
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cyl(h=out_d, d1=out_d, d2=0);
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}
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}
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module silencer() {
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left(test*(out_d+5)) body();
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baffles();
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right(test*(out_d+5)) cap();
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right(test*(out_d+5)) thread();
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}
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silencer();
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echo(th_spec); |