mic-table-clamp: Provide BlankStem

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/mic-table-clamp.scad b/mic-table-clamp.scad
index c11ef0b52937f3e4e57ab3dfdddcb813bdcc0b34..0cc8db66fafefd7d2c7e8e73c0dac7a1bfd5bd0e 100644 (file)
--- a/mic-table-clamp.scad
+++ b/mic-table-clamp.scad
@@ -11,6 +11,9 @@ include <camera-mount.scad>
 
 positive_dia = inch * 3/8. - 0.375;
 positive_l = inch * 1/2.;
+positive_blank_dia = 9.0;
+
+blank_taper = 1.0;
 
 stem_l = 40;
 stem_dia = 12;
@@ -94,6 +97,17 @@ module Stem(){ ////toplevel
                   length= (positive_l + 0.1) / inch);
 }
 
+module BlankStem(){ ////toplevel
+  StemWith() {
+    hull(){
+      cylinder(h = positive_l + 0.1 - blank_taper,
+              r = positive_blank_dia/2);
+      cylinder(h = positive_l + 0.1,
+              r = positive_blank_dia/2 - blank_taper);
+    }
+  }
+}
+
 module Wingnut(){ ////toplevel
   difference(){
     union(){