DIY Naked Coffee Portafilter

Creating/making a naked portafilter is very simple using a hole saw. This how I made mine.

Tools used:
-50mm holesaw
-Drill
-Dremel and grinding stone or sand paper

Use hole saw to drill out bottom. 

Watch out for the small shaving, cover your eyes, hands and don't breath it in.

Smooth and clean up using Dremel and grinding stone

Clean well before using