Matt Jackson in his usual and inimitable way takes us through how to draw a near-perfect circle with a framing square. I’m not sure when you’d need this technique, but it’s great to know. Maybe making a masterful bunkbed, or cutting a “porthole” from a door slab, or a sink cutout for a built-in project?
For chapter and verse on the mighty two-bladed calculator, this is a great place to start, with veteran framer Don Dunkley.
In the meantime, enjoy your donut. You’ll see.