A TPU cover for my expresso knock box rod to protect the porta filter.

I tried knocking the dried expresso coffee pucks into the sink/trash but the filter came out with the puck so I printed a knock box for my expresso coffee pucks to go into. Works great but I was afraid of continually hitting the porta filter on the PLA/ASA hard surfaces. So I made a TPU sleeve to slide over the rod to minimize potential damage.

Made with and without a puck breaker.

My rod is 22mm round and 128mm long and this just slides over the rod. Can be scaled and shortened/lengthened if needed. 

I'll try and link the knock box this fits. Espresso Knock Box (No AMS needed) by Jerald - MakerWorld