A guy made an intractables guide (and an accompanying youtube video) that would be an excellent starting point for you: https://www.instructables.com/Recycle-Cardboard-Into-Anything-With-3D-Printing/
It’s a bit involved and messy (and will ruin your blender if you do this a lot), but you can get totally usable parts from this method!
The new model I got was definitely a better design and seems just as well made as the last one, but I have seen that many of the new designs have what I’m assuming are plastic pieces, which does suck.
When a friend broke the saw blade on my Leatherman (which was ~15 years old), I sent it back to them for repair. A short while later I received a brand new Leatherman with a letter saying they were so sorry, but they didn’t have parts for my old model anymore, so they sent me a brand new, better model. The letter also said they understood people had emotional connections to their tools, so if I decided I wanted the old broken tool back instead, they would hold onto it for me for a few months, and all I’d need to do was email them asking to swap.
10/10 the best customer service I’ve ever received.
Has he released the files for this, yet? I just looked at the video again and it didn’t look like he had.
I do want to give it a try once he’s released them.