Knock Box and Tamper
thingiverse
51mm Tamper (resize to your portafilter) and knock box. The bottom of the knock box has an inset to add a piece of rubber cushioning so its not as loud when knocking your grounds out. This set was made to be used in tandem with my Ball brand mason jar coffee holder and scoop set found here https://www.thingiverse.com/thing:2975053 Update 10/10/2018: Added a two piece knock box bar that slides together. Bottom can be printed in PLA, PETG or something similar. The top is meant to be printed in TPU to give an added bounce and absorb the hit. Also added is the bottom shock absorber meant to be printed in TPU. This is meant to be removable so washing can be easy without trapping any water. As always with TPU there will be some shrinkage so playing with scaling might be necessary.
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