Fire logs made from compressed coffee grinds

Matt Coston

Posts: 136

posted 7 years ago

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I just saw these for sale in a local DIY store (in the UK) and purchased a bag on impulse. Haven't used them yet.

thomas rubino

rocket scientist

Posts: 6355

Location: latitude 47 N.W. montana zone 6A

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posted 7 years ago

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Hey Matt; Thanks for sharing ! Don't know what they cost, but what a great way to use coffee grounds ! Being near Seattle, we are confirmed coffee snobs here , and consume fresh roasted whole beans every morning. We currently save our coffee grounds to till into the garden... BUT maybe I should build a press and feed our rocket mass heater with coffee instead of cord wood ! Let us know how they work.

For all your Montana Masonry Heater parts (also known as) Rocket Mass heater parts.
Visit me at
dragontechrmh.com Once you go brick you will never go back!

Matt Coston

Posts: 136

posted 7 years ago

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The bag I purchased is identical to the one in the video.

The bag cost me £6.99. Contains 16 logs and weighs 7.9kg (17.6 lbs) - that's not a typo, it's really heavy.

They're manufactured in London (according to the bag).

Today's lesson is that you can't wear a jetpack AND a cape. I should have read this tiny ad:

A rocket mass heater heats your home with one tenth the wood of a conventional wood stove

http://woodheat.net