tłumik do CZ457

Sasza/Tłumik.scad

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