I've printed a few spool adapters but this by far has been best one AND the only one that did not require support (of those I printed). Halves went together perfectly with no issue with an amazing thread. Not too thick but thick enough that it doesn't break when removing from your plate. Slight deburr of the edge but well worth that little effort. If you need a spool adapter for your smaller rolls, this will be the one to use. I was between projects so I decided to print a few of them in what colors I had in my CFS. Boost and a like, thank you!