Circular saw plate.

[George Armstrong]

Why do most circular saws have an angle cut on the back edge of the base plate?

[Cliff Rohrabacher]

Post a picture.

Often manufacturers will punch a hole that facilitates handling and positioning during the metal working process.

That ring under the cap lip or threaded portion of bottles is solely for handling during the manufacturing a1nd filling processes.

[Chris Friesen]

Post a picture.

All the pictures I've found online are from the wrong angle to show it, but I've wondered this as well.

Often the back corner (of the side away from the blade) of the baseplate is sliced off on a diagonal rather than being left rectangular. It doesn't look like a manufacturing issue.

[Jay Goddard]

During use the saw can frequently be abused/dropped. Manufacturers simulate this during product testing with "drop tests" from various heights.

Most "sidewinder" circular saws have no plastic housing structure supporting the left rear of the base. When the saw is dropped, breaking or bending this area of the base is almost certain. Therefore, most power tool manufacturers remove this corner.