From 13702a3d5b0eecfee265b07f5c737e347178f8c2 Mon Sep 17 00:00:00 2001
From: mattmcw <matt@sixteenmillimeter.com>
Date: Thu, 30 Mar 2023 20:15:43 -0400
Subject: [PATCH] Add a canon_EF_body_cap script

---
 scad/Canon_EF_body_cap.scad | 63 +++++++++++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)
 create mode 100644 scad/Canon_EF_body_cap.scad

diff --git a/scad/Canon_EF_body_cap.scad b/scad/Canon_EF_body_cap.scad
new file mode 100644
index 0000000..d6710f8
--- /dev/null
+++ b/scad/Canon_EF_body_cap.scad
@@ -0,0 +1,63 @@
+//Title: Canon EF Mount Body Cap
+//Modified By: Robert Macgregor
+//Date: March 29, 2014
+//Original Author: Alex English - ProtoParadigm
+//Original Date: 8-8-2011
+//License: GPL2
+
+
+//$fs = .1;
+$fn = 50;
+module EFmount() {
+	//$fa = 1;
+	union() {
+		translate([0,0,-1])
+		cylinder(h = 5.8, r = 66.5/2);  //outer grip
+		translate([0, 0, 6])
+			cylinder(h = 5, r = 50.5/2);
+		translate([0, 0, 4])
+			cylinder(h = 3, r = 54/2);   //lip
+		//translate([0, 0, 12.5])       //inner mounting hole
+			//cylinder(h = 3.2, r1 = 39.7/2, r2 = 39.5/2);
+		translate([0, 0, 7])
+			threads();
+		rotate([0, 0, -33])
+			translate([-67/2, 0, 1.9])
+				cube(size=[1, 2, 5.8], center = true); //alignment mark
+		
+	}
+}
+
+module threads() {
+	difference() {
+		cylinder(h = 4, r = 53.2/2);  //thread outer
+		cylinder(h = 4, r = 50.4/2);  //thread cylinder
+		cylinder(h = 2.6, r = 54/2);  //gap lip to thread
+		for(i = [ [0, 0, 0], [180, 0, -70], [0, 0, -120], [180, 0, -180], [0, 0, -230], [180, 0, -300] ])
+		{
+			rotate(i)	
+				translate([-35, 0, -5])
+					cube(size=[40, 18, 10]);
+		}
+	}
+	intersection() {
+		difference() {
+			cylinder(h = 4, r = 54/2);
+			cylinder(h = 4, r = 50.4/2);
+		}
+		translate([-54/2+.4, 0, 0])
+			cube(size=[4, 1.9, 4], center = false);  //thread stopper
+	}	
+}
+
+difference() {
+	EFmount();
+	translate([0, 0, 1.4])
+		cylinder(h = 10, r = 41.5/2);
+	for(k = [44.639 : 8.639 : 385]) {
+		rotate([0, 0, -k])
+		translate([-68/2, 0, -1.1])
+		cylinder(h = 6, r = 2);
+	}
+	//cylinder(h = 17, r = 33/2);
+}
\ No newline at end of file