Paper VS metal filter
The guys at Aerobie have run many tests with paper filters and metal filter. The paper filter won the taste test, every time.
Aerobie claims that a paper filter removes diterpenes, which raises LDL (bad) cholesterol. Be aware of that.
I purchased the Keto Coffee metal filter for use in the AeroPress. It works great.
It allows a slight amount of grounds through when you press, but not much.
It creates the same great tasting coffee as a paper filter.
You might want to stick to paper filters because it removes diterpenes.
DIY paper filters
It’s easy to make your own AeroPress filters. Make sure you get the size right. My first round of DIY AeroPress filters were too small. It caused leakage.
To DIY your AeroPress filters you’ll need the following:
- A pair of scissors.
- Store bought paper coffee filters.
- Cardboard (1.2mm thick).
- Pen or pencil.
To make DIY AeroPress filters, follow these four steps:
- Use an AeroPress filter to draw a template onto the cardboard.
- Cut out the piece of cardboard.
- Use the cardboard as a stencil to draw two circles onto a standard paper filter.
- Cut out four AeroPress discs from the paper filter.
Cost of DIY filters
A box of 40 standard paper coffee filters cost me about $1.12 (ZAR15.00).
You get 4 AeroPress filters from one standard filter.
That’s roughly $0.015 per filter, a fraction cheaper than an AeroPress paper filter ($0.04). It’s not worth making your own filters if cost is the only criteria.