enlarge holes on motor mount

the screw and nuts will take care of holding the motor tight,
  so the holes can be big enough for the screws to slip in.

diff --git a/3d-printables/motor-mount.scad b/3d-printables/motor-mount.scad
index 33533ae3a2c5dfeb39eee7c5d028c07c269a7e3d..3e96b6999df54403963651752d87e75f9e4ed73e 100644 (file)
--- a/3d-printables/motor-mount.scad
+++ b/3d-printables/motor-mount.scad
@@ -7,15 +7,14 @@
 $fn = 60;
 
 // from schematic http://goo.gl/96RKol
-collar_radius = 9.2 / 2;
-// subtract a bit to make snap fit
-nubbin_radius = (4.48 - 0.3) / 2;  // make snap fit
-screw_radius = 2.9 / 2 + 0.1; // a little bigger so screws fit through
+collar_radius = 9.2 / 2 + 0.25;
+nubbin_radius = 4.48 / 2;
+screw_radius = 2.9 / 2 + 0.35; // a little bigger so screws fit through
 
 motor_height = 22.23;
 
 // http://freespace.virgin.net/matt.waite/resource/handy/screwsize.htm
-_6_radius = 3.5 / 2;
+_6_radius = 3.5 / 2 + 0.25;
 
 // measurements we made up:
 mount_total_x = 38;