This is my attempt at a extensible scissor arm.

Designed with OnShape: https://cad.onshape.com/documents/80995b9d0262993ea32f3e05/w/e147e8d7034c2e306494f194/e/02517ac9ea98da16c7d5db09

It uses the excellent snapping pin design by Emmet, https://www.thingiverse.com/thing:213310, adapted to OnShape by myself.

Update 2022-02-27: added longer handle and jaws.

Notes: 

Print one pair of handles, one pair of jaws, and as many pairs of arms as you want. You'll also need a fistful of pins, of course.

All pieces can be printed without support except the jaws, that require one.

The pins must be printer horizontally, and probably they require a brim or a raft, because they have a very small footprint.

Category: Mechanical Toys