Nice job, is that 'meccano' you used to build it?
Could become a number of useful tools.
Yes, this is correct. I don't have access to CNC router, so this is one way I prototype. You can bend the parts, so that they can fit together and everything is connected with bolts and nuts. But this is also the problem. You can't make very symmetrical construction, because every part is little different from one another. The bolts and nuts get loose.