From f924000a4ac0515dd2ec671fe6b1e110b23caccb Mon Sep 17 00:00:00 2001
From: Justin Lin <caterpillar@openhome.cc>
Date: Wed, 25 Sep 2019 20:59:47 +0800
Subject: [PATCH] add joint_T

---
 src/part/joint_T.scad | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)
 create mode 100644 src/part/joint_T.scad

diff --git a/src/part/joint_T.scad b/src/part/joint_T.scad
new file mode 100644
index 00000000..296dd75e
--- /dev/null
+++ b/src/part/joint_T.scad
@@ -0,0 +1,18 @@
+module joint_T(shaft_r, shaft_h, t_leng, ring_thickness, spacing) {
+    ring_r = shaft_r + spacing + ring_thickness;
+    module joint_ring() {
+        hollow_out(ring_thickness)
+            circle(ring_r);
+    }
+
+    ring_height = shaft_h / 3 - spacing;
+    linear_extrude(ring_height) joint_ring();
+    translate([0, 0, shaft_h - ring_height]) 
+        linear_extrude(ring_height) joint_ring();
+        
+    translate([0, 0, shaft_h / 2]) 
+        linear_extrude(shaft_h / 3, center = true) 
+            line2d([0, 0], [t_leng, 0], shaft_r * 2, p1Style = "CAP_BUTT", p2Style = "CAP_BUTT");
+
+    linear_extrude(shaft_h) circle(shaft_r);
+}
\ No newline at end of file