Hi @3d-PrintCreator ,
Many thanks for the 3mf. That really helps in understanding the devillish details. Indeed in this particular case, an added complexity comes from the support interface being larger than the area to be supported. This then extends into the insides. With the support blocker being applied by the slicer as a modifier, it is only taking effect where the blocker and the model coincide.
So we do need to become creative:
We already observed, that we need to actually print something on the plate to prevent a support from going straight down to the plate.
- So I added a thin disk in the centre of the tube
- and enabled “On build plate only”.
This was enough to prevent the support from growing insides the tube. And with only a thin, single layer, brim like plate, waste and hopefully removal effort is minimal.
I have kept the original support blocker just in case in the 3mf.
Supportblocker Disk.3mf (72,8 KB)
Note that I sometimes have a “fat finger” problem when scrolling through the layers. There’s a pause around layer 49 and I am not sure if you want that or if I misclicked. If it was my fault, just delete it and slice again.
This print also looks like a prime candidate to use a PETG interface surface for better print quality and easy removal. Just in case it does not print as well as intended.
I do hope that this helps you to get the part printed with a minimum of fuzz.
Best wishes and happy printing,
Yours,
Eno
PS: I am very rusty in my Dutch but used to be able to speak (and write) when growing up in a Flemish community in Belgium. I still love hearing the language as there’s no way to be insulted by Dutch swearwords. They just sound far too cute 
