Universal Bottle Opener (Coin)
Источник:
No-Support Universal Bottle Opener (Coin-Assisted Design)
No-support-required, the 3D-printable universal bottle opener is designed to open both twist-off beer bottles and standard metal/plastic bottle caps. The design uses a South African R2 coin (or any similar-sized coin, such as a €1, US quarter, or UK £1 coin) as a replaceable leverage insert.
