powerbank-bike-clamp: fix to reduce size below bolt

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

diff --git a/powerbank-bike-clamp.scad b/powerbank-bike-clamp.scad
index 05ede89ea9ca022370eb65cfc5524d7bc4d46cf8..01b5ebef502ed12fe7ee34c93a713acb6bb57e21 100644 (file)
--- a/powerbank-bike-clamp.scad
+++ b/powerbank-bike-clamp.scad
@@ -83,7 +83,7 @@ screw_max_y_rhs = -main_r -knob_behind_across/2;
 screw_y = min(screw_max_y_lhs,
              screw_max_y_rhs);
 
-bot_y = screw_y -max( screw_nut_across, knob_behind_across/2 )
+bot_y = screw_y -max( screw_nut_across/2, knob_behind_across/2 )
   -minor_wall_min;
 
 holder_x_sz = bank_x_sz + bank_recess_dx*2;