Index: TO18.fp
===================================================================
--- TO18.fp	(revision 37460)
+++ TO18.fp	(revision 37461)
@@ -2,6 +2,7 @@
  ha:subc.5 {
   ha:attributes {
    footprint = TO18 Transistor
+   openscad = TO18.scad
   }
   ha:data {
    li:padstack_prototypes {
Index: TO18.scad
===================================================================
--- TO18.scad	(nonexistent)
+++ TO18.scad	(revision 37461)
@@ -0,0 +1,72 @@
+// Model for TO18 through hole package
+//
+// Copyright (C) 2023 Erich Heinzle
+//
+// File distribution license:
+//  This library is free software; you can redistribute it and/or
+//  modify it under the terms of the GNU Lesser General Public
+//  License as published by the Free Software Foundation; either
+//  version 2.1 of the License, or (at your option) any later version.
+//
+//  This library is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+//  Lesser General Public License for more details.
+//
+//  You should have received a copy of the GNU Lesser General Public
+//  License along with this library; if not, write to the Free Software
+//  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+//
+// The above distribution license applies when the file is distributed as a
+// stand alone model file or as part of a library, in both cases intended
+// for reuse combined by the user with other openscad scripts.
+//
+// Use license:
+//  as a special exception, the content of the file may be
+//  embedded in an openscad script that represents a printed circuit board,
+//  for example when a board is exported by pcb-rnd. In such use case,
+//  the content of this file may be copied into the resulting board file
+//  with or without modifications, without affecting the board file's license
+//  in any way.
+//
+
+module to18()
+{
+    height = 4.83;
+    major_diameter = 5.6;
+    minor_diameter = 4.7;
+    rim_thickness = 0.5;
+    tab_square = 1.0;
+    pin_diameter = 0.45;
+    pcb_offset = 3.0;
+    $fn = 50;
+    
+    // r[adius], h[eight], [rou]n[d]
+    module rounded_cylinder(r,h,n) {
+        rotate_extrude(convexity=1) {
+            offset(r=n) offset(delta=-n) square([r,h]);
+                square([n,h]);
+        }
+    }
+
+    union() {
+        color([0.7,0.7,0.7]) {
+            translate ([0,0,pcb_offset]) {
+                rounded_cylinder(minor_diameter/2,height,0.5);
+                rotate([0,0,135])
+                    translate([-tab_square/2,0,rim_thickness/2])
+                        cube ([major_diameter+tab_square, tab_square, rim_thickness], true);
+                cylinder(r = major_diameter/2, h = rim_thickness);
+            }
+        }
+        color([0.8,0.8,0.8]) {
+            translate ([-1.27,0,-2.45])
+                cylinder(r = pin_diameter/2, h = pcb_offset +2.5);
+            translate ([0,1.27,-2.45])
+                cylinder(r = pin_diameter/2, h = pcb_offset + 2.5);
+            translate ([1.27,0,-2.45])
+                cylinder(r = pin_diameter/2, h = pcb_offset + 2.5);
+        }
+    }
+}
+