diff -r 7126d73b175a -r 631e66a661d8 parts/60931.dat
--- a/parts/60931.dat	Tue Jan 02 21:07:52 2018 +0200
+++ b/parts/60931.dat	Wed Jan 03 13:43:31 2018 +0200
@@ -12,3 +12,11 @@
 1 16 0 0 0 -1 0 0 0 1 0 0 0 1 s\60931s01.dat
 1 16 0 0 110 0 0 1 -1 0 0 0 -20 0 axl3hole.dat
 1 16 0 0 90 6 0 0 0 0 6 0 -1 0 4-4disc.dat
+0 BFC INVERTNEXT
+1 16 22 0 107 -6 0 7.34788e-16 -7.34788e-16 0 -6 0 1 0 4-4cylc.dat
+0 BFC INVERTNEXT
+1 16 -22 0 107 -5 0 6.12323e-16 -6.12323e-16 0 -5 0 1 0 4-4cylc.dat
+1 16 22 0 108 -1 0 1.22465e-16 -1.22465e-16 0 -1 0 -1 0 4-4ring6.dat
+1 16 -22 0 108 -1 0 1.22465e-16 -1.22465e-16 0 -1 0 -1 0 4-4ring5.dat
+1 16 -22 0 108 -1 0 1.22465e-16 -1.22465e-16 0 -1 0 -1 0 4-4ring6.dat
+1 16 22 0 108 -1 0 1.22465e-16 -1.22465e-16 0 -1 0 -1 0 4-4cylc.dat