toolbox-inserts: actual screw threads, slop for thread

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

diff --git a/toolbox-inserts.scad b/toolbox-inserts.scad
index e8a41231da3a6d82dd15ed28a0471bfd00758003..1ca3004d1bfb0e06f9b021ac97c3b0c2c01ca200 100644 (file)
--- a/toolbox-inserts.scad
+++ b/toolbox-inserts.scad
@@ -15,6 +15,7 @@ below_plane_z = 4.5;
 fixing_pitch = 10;
 fixing_depth = 6;
 fixing_nom_d = 4;
+fixing_thread_d = fixing_nom_d + 0.375;
 fixing_thread_pitch = 0.5; // M4
 
 fixing_receptacle_d = 4 + 2.5 + 2.5;
@@ -123,7 +124,7 @@ module WellSurround(
       for (hull_group = fixings)
        AtFixingPositions(hull_group)
          render()
-         metric_thread(diameter=fixing_nom_d, pitch=fixing_thread_pitch,
+         metric_thread(diameter=fixing_thread_d, pitch=fixing_thread_pitch,
                        length=fixing_depth, internal=true, leadin=3,
                        test=$screw_test);
     }