fairphone-case: fix AdhocMultiprintFrame

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

diff --git a/fairphone-case.scad b/fairphone-case.scad
index 51f9a170ffbe5daa5e6faa938006ce9e19e10d64..4f109dfb0c63bd958b3c0a73ae6d12c2047b4f07 100644 (file)
--- a/fairphone-case.scad
+++ b/fairphone-case.scad
@@ -350,7 +350,7 @@ module AdhocMultiprintFrame(phase, z0, zs) {
   xextra = extra + -epp4[0];
   xrange = [ 0, phone_width ] + [-1,+1] * xextra;
   yextra = extra + -epp4[0];
-  yrange = [ -phone_height + -hppB[0] + hp_r2, 0 ] + [-1,+1] * yextra;
+  yrange = [ -phone_height + +hppB[0] - hp_r2, 0 ] + [-1,+1] * yextra;
   p0 = [ xrange[0], yrange[0] ];
   p1 = [ xrange[1], yrange[1] ];
   echo(p0, p1);