Draft Piping Centerline Problem

 

What about your VIEW Arc Tolerance and Gapping attribute?
Have you tried setting the first one to 1 and the second one to zero?
Or it could be also due to the NAPP attribute of your negative primitives....

hey corrado

thx for the reply.
i've already tried to change the NAPP settings but didn't changed anything :-(
Same as the arc etc

for me it looks like it's just not working correct with the choosen style ( hidden lines )