Air Lock Cap for Home Brew
thingiverse
The 3-piece airlocks are ultra convenient, but the caps that come with them are super flimsy. You can buy a new airlock, or just do without the cap, but then spiders, fruit flies, or other creepy crawlies get in your [airlock fluid](https://www.google.com/search?q=what+is+the+cheapest+vodka+you+can+buy). So here's a cheap easy to print replacement.
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