submitted 4 days ago by Stopwatch1986@lemmy.ml to c/coffee@lemmy.world

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I've been wondering if something sitting on top of the beans in the hopper (eg a bag of rice) would stop new oxygen reaching the beans as their level drops. Ideally, the hopper would be cylindrical and the object a simple disk, but mine is the usual conical shape. Or am I over-thinking this?

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[-] beeng@discuss.tchncs.de 2 points 4 days ago

Seal the lid a bit with a gasket?

[-] Stopwatch1986@lemmy.ml 1 points 3 days ago

That assumes that a gasket would create a vacuum in the hopper over time. I think fresh air will find a way in anyway. Filling that space with a balloon or a bag is simpler. I will be surprised if this hasn't been done already by a grinder or accessories maker. There are plunger canisters already.

[-] beeng@discuss.tchncs.de 2 points 3 days ago* (last edited 3 days ago)

vacuum? What. No it just limits where new air can get in. Fresh air will always get in yes.

I have a small jar that keeps about a weeks worth out of the bag, and then I grind dose daily.

this post was submitted on 13 Sep 2026

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