First of all, i'm a rookie at CAD design. So i made the mistake of making all the parts of my first complex project as separate files. Given that they are all drawn to scale with each other, and to size with the desired actual product, can the files be merged into one collada file (without altering the size of any of the parts)? I've attahed a folder with all the parts in it to this message. The copies are deliberate, as i will need two of those parts. If anyone can merge them (copies included), or at least direct me to something that could, it would be much appreciated.