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ShopReady Draft 2D · 1:08 · narrated, with captions

A toggle clamp for a jig, part 3 of 6: Over center, it locks

A spring under the pad, pushing 40 N, stands for the work pushing back. With the handle a little short of center, LET GO and the clamp springs open to its stop. With the handle pushed past center onto its stop, LET GO and the same push holds it shut.

Before thisA toggle clamp for a jig, part 2 of 6: Four pins, a pull by hand, and stopsNextA toggle clamp for a jig, part 4 of 6: Room for the handle, and the pad's path

This is one part of a longer film

Whole project · 6:56

A toggle clamp for a jig: the whole project

A toggle clamp for a jig, from a blank drawing to two working clamps and a plate ready to cut. The four parts are drawn from the side as rectangles and slots with typed sizes and welded where two shapes make one part. Four clicks pin them into a four-bar linkage that is pulled by hand; stops on the link make the lock, and a spring under the pad shows it: short of center the clamp springs open, past center it holds. A fence in the handle's way is found with Check for hits and moved with the Clearance tool, the pad's path is traced, the spindle is stretched for thicker work with its dimension following, and the whole clamp is copied, joints and all, onto a second plate. The plate is drawn from above with mirrored holes and checked for cutting.

The rest of this project

Chapter · 1:37

A toggle clamp for a jig, part 1 of 6: The four parts

Chapter · 1:16

A toggle clamp for a jig, part 2 of 6: Four pins, a pull by hand, and stops

Chapter · 1:07

A toggle clamp for a jig, part 4 of 6: Room for the handle, and the pad's path

Chapter · 59 s

A toggle clamp for a jig, part 5 of 6: Set for thicker work

Chapter · 1:36

A toggle clamp for a jig, part 6 of 6: Copied to a second plate, and ready to cut