There are tons of websites about building particular machine prototypes, Such as DIY CNC ect. Those new plastic forming machines, I forget what their called. But I found most of them linked to instructables in one way or another, And thats's actually how I found instructables, Was by following links on DIY sites, Or from member posts on those same sites. But if I was going to choose which site to call my home base for that type of information, Then I would choose instructables, In fact thats actually what I did. And wasnt until later, That i started getting into all sorts of other types of projects, Thanks to some very interesting reading on this site, And some great ideas from the members.