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I resized the parts up to twice as huge and printed it with the dimensions. I figured I 'd have a much better chance of success by making the prototype bigger, considering that it would be easier to make the parts from wood: I made many of the parts from 1/4 plywood, thoroughly cutting them out.

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This relies on the mass of the blade and momentum. To lock the blade in the forward (open) position, or the back (closed) position, there are wooden springs that engage with completion of the blade when it's open, and a notch in the blade when it's closed: These springs are brushed aside by the slide, which has ramped areas.

As it moves forward, it pushes the spring aside and the blade is totally free to come back. It's a relatively complex concept and all of the parts need to work precisely for it to function appropriately, so a model is an excellent method to really see the possible issues.

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When I added what I thought sufficed, it caused the "U" shaped parts to press down on the slide, which in turn pushed down on the blade. The result was a great deal of friction that kept the blade from moving freely. I have actually considering that developed a way to conquer this issue, however there are still a lot of other things to work out.

To make it from steel, I might significantly reduce the size of the parts, however it would still be fairly large, mainly since of the size of the spring needed for it to work. I've been believing that it could be made smaller sized if I utilized two compression springs, instead of one larger tension spring, and that would be my next step in the style.

Potentially drilling out the base of the blade and fill it in with a heavier metal, like lead, would increase the mass enough to carry the blade forward. If you would like more information or to reveal something that you've made, I started an online forum subject on the.  Source 'll be publishing information on my progress there.