mic-camera-adapter: adjustments from v2 (actually!)

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

diff --git a/mic-camera-adapter.scad b/mic-camera-adapter.scad
index e17d0c7f14c53c2033126c3a391ef40754adc9ad..e996d00798d477a9b460fc206b1cbfb854703816 100644 (file)
--- a/mic-camera-adapter.scad
+++ b/mic-camera-adapter.scad
@@ -4,7 +4,7 @@ include <threads.scad>
 
 inch = 25.4;
 
-positive_dia = inch * 3/8. + 0.25;
+positive_dia = inch * 3/8. - 0.25;
 positive_l = inch * 1/2.;
 
 negative_dia = inch * 1/4. + 0.25;