A: Both questions are related, so this week’s column is a two-fer. Caps and lids are recyclable in Rhode Island, when attached to the right host. Because bottles can be plastic, metal or glass, let’s ...

Discover how to build a DIY mini water pump using recycled bottle caps and a small DC motor! This step-by-step tutorial shows you how to create an efficient homemade pump from everyday materials.

Do you want to design something to match existing threads on a bottle, or a cap? It turns out there’s an easier way than reaching tiredly for the calipers and channeling one’s inner reverse-engineer.