anyone teaching how to make coco peat shredder / separator machine?

Anyone teaching how to make coco peat shredder / separator machine?
i saw a lot of video showing it off on youtube but no one is actually teaching it. i would really like to learn how to DIY one, since i like planting and stuff and need coco peat but it is quite expensive here.

If you watched the videos already then you know there are quite a few possible approaches to the problem.
In the basics it works like any other fibre seperating machine, like those for wool.
Comes down to how fine you need the fibres.
In the videos you can see the mechanism working that shreds the fibres.
You don't need a 100% copy, just a motor strong enough.