I created the first version of this skeleton style utility knife about a year ago, and I have used it almost daily since. Primarily for opening and breaking down boxes. But one thing turned out to be a recurring issue… I kept losing the cases for it. And, even if I did not lose the case, it somehow never seemed to make it back onto the knife. So version 2.0 addresses that with an integrated and folding cover that is also the handle when extended.
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Since it folds small and the blade is protected when closed, it is way more suitable for putting in a pocket, making it that much more convenient. I have also added a spot for a 10x3mm magnet to be inserted so you can stick it to things. In my case, I have steel shelves where I want to keep several of these handy.

The two parts of the assembly snap together and apart so that the handle can also hold the tools for installing and removing the blade.

Loading a blade is very similar to the prior knife design. It is pressed into the frame and retained by the same compliant tab, which has two nubs on it that engage the blade.

And, removing the blade uses the two prongs on the handle to release the blade from the compliant tab.

I have found there are lots of variants of this type of blade in the market, but in the US and Canada, the Stanley brand and size seem to be most prevalent. So please check the size for compatibility.

Overall, the new design is about the same length as the old model when open but 2/3 its size when folded closed.

Print Settings
Functional designs (such as this one) generally require more strength than non-functional designs and more strength than the typical default slicer settings provide, so please review your slicer settings carefully.
This product was designed for a 0.4mm nozzle and a 0.2mm layer height. For best results, I suggest the following:

Assembly Notes
Simply press the handle ring into the frame ring, and assembly is complete.

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