toolbox-inserts: allow screws to protrude avoiding zero measure

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

diff --git a/toolbox-inserts.scad b/toolbox-inserts.scad
index 911eb2d3627c77b9a53a53fc5fb6cac0a13d4e3a..1a6fc24de29ed471eeef6c21c8dfac69d42aa8bf 100644 (file)
--- a/toolbox-inserts.scad
+++ b/toolbox-inserts.scad
@@ -69,7 +69,7 @@ module AtFixingPositions(screws) {
 }
 
 module FixingSurround() {
-  linextr(0, $fixing_depth)
+  linextr(0, $fixing_depth - 0.1)
     circle(r= fixing_receptacle_d/2);
 }