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The modern (when I got it as a teenager) scroll saw has a solid C-frame to hold a blade guide, and a lever mechanism hidden inside, because we actually care about not hurting people these days. |
A simple spring-based scroll saw has very few moving parts. |
This model has two C-frames, one that moves, and one that doesn’t, to hold the blade guide. |
This elegantly-shaped scroll saw has a spring to pull up on the blade. |
This model is closer to a modern design, with a set of levers instead of a solid C-frame to pull the blade up. Because no one, apparently, minded the occasional gruesome injury back then, the moving lever is completely out in the open. |
Belt Driven Scroll Saw |
This one looks like it might have an arm reaching around the frame, but it’s actually just a spring wire instead of a coiled spring. |
The spring in this model is enclosed in a tube, and it adds an adjustable blade guide that can be lowered to just above the surface of the work. |
My Old Scroll Saw |
Do you have a better example of this kind of tool? Let me know by leaving a comment, and include a picture of it if you can so everyone can see!