// -*- C -*-
-screwrad = 4.3 / 2 + 0.30;
-shaftrad = 7.5 / 2 - 0.30;
+fudge=0.15;
-diskrad = 12.0 / 2 - 0.25;
+screwrad = 4.5 / 2 + fudge; // xxx check
+shaftrad = 7.5 / 2 - fudge;
+
+diskrad = 12.0 / 2 - fudge;
csinkpart = 0.5;
-shaftlen = 4;
+shaftlen = 8; // xxx check
diskthick = 1.5;