From cb037a7b55c1f8223322142d03763ac3e8d85b8a Mon Sep 17 00:00:00 2001
From: "Jan \"Yenya\" Kasprzak" <kas@fi.muni.cz>
Date: Sun, 10 May 2015 13:56:50 +0200
Subject: [PATCH] Diffuser for ZSJ-T219 flashlight

---
 diffuser-zsj-t29.scad | 41 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 diffuser-zsj-t29.scad

diff --git a/diffuser-zsj-t29.scad b/diffuser-zsj-t29.scad
new file mode 100644
index 0000000..c7c46db
--- /dev/null
+++ b/diffuser-zsj-t29.scad
@@ -0,0 +1,41 @@
+// Diffuser for ZHISHUNJIA ZSJ-T29 LED flashlight (dx.com SKU #317226).
+infty = 100;
+eps = 0.01;
+
+diaphragm = 0.5; // diaphragm thickness
+wall = 1.5;
+
+ring_h = 12; // the height of the body
+ring_d = 34.3 + 0.5; // the lens ring diameter + tolerance
+
+clip_h = 7.3 + 0.5; // height of the clip above the diaphragm
+clip_dist = 1.5;
+clip_size = 1.2;
+
+
+module diffuser() {
+	difference() {
+		cylinder(r = ring_d/2 + wall, h = ring_h);
+		translate([0, 0, diaphragm])
+			cylinder(r = ring_d/2, h = ring_h);
+		for (angle = [0:120:360]) rotate([0,0,60+angle]) {
+			translate([0, 0, 20+clip_h])
+			rotate([0, 90, 0])
+				cylinder(r=20, h=infty);
+		}
+	}
+	for (angle = [0:120:360]) rotate([0,0,angle]) {
+	 	intersection() {
+			hull() {
+				translate([ring_d/2-clip_dist, -infty/2, clip_h])
+					cube([infty, infty, clip_size]);
+				translate([ring_d/2+wall/2, -eps/2, ring_h+wall])
+					cube([eps, eps, eps]);
+			}
+			cylinder(r = ring_d/2 + wall/2, h = ring_h);
+		}
+	}
+}
+
+diffuser();
+
-- 
2.43.5