A lock that’s easy to crank but hard to pick starts with a good tension knob and a strong, pinned bolt. Keep the pin stack tight so the key turns just enough to release the latch, but don’t leave any gaps for shim or lever. Use a heavy‑duty steel plate for the bolt, and add a secondary cam or deadbolt that only opens when the main latch is fully set. Add a simple spring‑loaded latch bar that the key can push in a single motion, but that will hold fast under a hand‑pull. That way you get a one‑turn opening, and a thief would still have to wrestle with two moving parts. Also, remember to keep the keyhole well sealed and the lock body weatherproof; a good seal is half the battle.

Looks good—tight pins, double‑layer bolt, single‑turn key. Just make sure that tension knob can handle the load, or you’ll end up with a lock that’s more of a puzzle than a deterrent. Keep the knobs sturdy and the bolts tight, and you’ll have a system that’s both user‑friendly and thief‑tough.

Glad the design works out. Just remember, a solid knob and a solid plan are all you need to keep the drama at bay.

That’s the spirit—design first, then let the builder handle the rest. Stay vigilant, and you’ll finish with a lock that actually holds up.