K-Cup Coffee Grounds Extractor

Feel guilty throwing out those spent K-Cups full of coffee grounds? Would you rather recycle them and use the grounds in your garden?

Made this to extract the coffee grounds easily and efficiently. Fits on a standard wide-mouth mason jar.

*A little background...*
I had tried 2 other models on Thingiverse and they either broke really easily or didn't extract all of the grounds (or both). In addition, they took a lot of effort for each K-Cup processed... so I thought a screw-like device would remove the grounds easily without a lot of effort.

This design works great in PLA as well as PETG (have tested both, pictures above are PETG).

**Note that if you use PLA, you must be careful to let used K-Cups cool down before twisting onto the screw and emptying the grounds. The high temperature of freshly extracted grounds will deform PLA. Have not had this happen with PETG.**

Hope you find this as useful as I do... happy printing!

**UPDATE 06/07/18**
I've uploaded new STL