Hey guys, Spent most of the day researching CNC designs. I am now pretty sure I want to design my own. I Feel i am able to build this machine...I have a decent workshop filled with tool and my grandfather has a model engineering workshop with manual mills which could come in pretty handy.

The only issue im having is pairing up the hole sizes in the rails to be able to fit the extrusion. This is becoming pretty frsutrating as I cant seem to find extrusion,rails(supported round and linear) that want to fit eachother easily.

Could you guys point me in the right direction of parts that are almost plug 'n' play please.

I also found this CNC Kit it seems pretty good to me but im not the expert here haha. If you could help Id really appreciate it