Knock Box and Tamper

thingiverse

51mm Tamper (resize to your portafilter) and knock box combo. The bottom of the knock box features a built-in cushioning recess, ensuring grounds are knocked out quietly every time. Designed to work seamlessly with my Ball brand mason jar coffee holder and scoop set found here https://www.thingiverse.com/thing:2975053 Update 10/10/2018: I've added a two-piece knock box bar that slides together for easy use. The bottom piece can be printed in PLA, PETG, or similar materials, while the top is best suited for TPU to provide extra bounce and shock absorption. Additionally, I've included a removable bottom shock absorber made from TPU to facilitate easy washing without water trapping. As with any TPU print, some shrinkage may occur, so be prepared to experiment with scaling to achieve optimal results.