Tea grounds scraper

This is intended to be used to remove remaining tea grounds from cylindrical teapot inserts. The STL file is for containers that are 45mm tall and 70mm in diameter; you can customize it for different sizes by opening the slvs file with solvespace and changing constraints.

It's useful to size the height so that the top of the scraper is just below any protrusions at the top (e.g. locking lugs). I haven't experimented with different "screw pitches"; it's likely that less aggresive ones will do the job better (but will be harder to print due to overhangs; also beware making anything that does at least one full halfrotation: getting the diameter right will become critical then).