My wife asked me to print a funnel. I realised that I have never before printed anything in vase mode. The first attempt gave me a nice funnel, however only the narrow bit of the funnel has been printed in vase mode. The wide part got an unwanted seam.
I have quickly realised the angle is a key factor. The wide part of the funnel had 45 deg. angle. I changed that to 50deg and… voila 🙂 The printer is printing perfect seamless funnel 🙂