From 0ccb29dfb0b484eea5de0d2ee3b2f3e8a4ffe8cd Mon Sep 17 00:00:00 2001
From: sixteenmillimeter <matt@downplaneconsulting.com>
Date: Mon, 10 Aug 2020 23:52:54 -0400
Subject: [PATCH] Shape for the friction knob on the JK 106 projection system.

---
 scad/jk_projector_knob.scad | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)
 create mode 100644 scad/jk_projector_knob.scad

diff --git a/scad/jk_projector_knob.scad b/scad/jk_projector_knob.scad
new file mode 100644
index 0000000..d162d51
--- /dev/null
+++ b/scad/jk_projector_knob.scad
@@ -0,0 +1,20 @@
+
+// THREAD
+// 
+
+module jk_projector_knob () {
+    $fn = 120;
+    count = 3;
+    cylinder(r = 15 / 2, h = 22, center = true);
+    for (i = [0 : count - 1]) {
+        rotate([0, 0, i * (360 / count) ])    translate([0, 8, -3]) difference () {
+            cube([9, 16, 16], center = true);
+            translate([0, 8, 6]) rotate([-45, 0, 0]) cube([9 + 1, 20, 16], center = true);
+          translate([8, 0, 0]) rotate([0, 0, 15]) cube([9, 20, 16+ 1], center = true);
+          translate([-8, 0, 0]) rotate([0, 0, -15]) cube([9, 20, 16+ 1], center = true);
+        }
+        
+    }
+}
+
+jk_projector_knob();
\ No newline at end of file