Following on from what Steve advised, I have the mains powered version:
https://www.metrovacworld.com/produc...uster/overview
Not cheap, but then have you seen the price of air duster aerosols these days?
Seriously, it's been worth every penny and has made cleaning out old chassis a joy. Just take them out into the garden, plug in the blower, bit of assistance from a big paintbrush if need be, and the job's done in under a minute. I also use it for computers, TVs, audio gear, the lawnmower, clock cases, lampshades and so on.
£85 on Amazon UK:
https://www.amazon.co.uk/Metro-220-2.../dp/B003BZCOKK
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