Hi Belto...welcome to the forum.
I am unsure by what you mean with control clamps, i assume with reading the replies from Alf and Gill you mean hold downs or feather boards. These are available from various suppliers ie axminster, rutlands etc but it is perfectly feasable to make your own, these are normally made with oak.
Its nice to see someone have a go a my router table...i have been hoping someone from here would try it to see just how good it was.
Pat Warner really liked it.
please Pm your details and i'll post off a disc with more pictures that should help with the build. The materials used in the build were mostly
B and Q bits so not to difficult to obtain
Regards
Ian