Author Archives: Richard

Fit-testing an FFP3 face mask at home

Throughout the pandemic, I’ve wondered how effective the face masks I wear actually are.

In medical situations you’re supposed to do “fit tests” to assess how well the mask fits you. The best filtration is no good if it doesn’t fit your face and it leaks around the edges.

Well-fitting is more important than the degree of filtration.

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Oat milk recipe

I’ve been trying to make a decent home-made oat milk for months.  I use oat milk to add to tea and coffee, not for cereal or to drink directly. I’ve tried so many recipes, and every time I get a really unpleasant “sludge” in the bottom of my drink.  It varies how much I got, […]

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Retro Challenge 2020/04

The Retro Challenge is a one-month long excuse to do cool stuff with old computers and blog about it (vaguely wrapped up as a competition). (This year the challenge is being hosted by Mark Sherman at http://mwsherman.com/RCR/2020/04/.  I started my challenge on 1 April without knowing for sure if it would be running this month. […]

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