I have 4 material files. We make 90% of our cabinets from 3/4" veneer core or particle board with face veneers. Their may also be a few p-lam parts within those cabinets. This is covered by our main material file.
We also make some fumehood cabinets that use different materials, hardware, thicknesses etc. Those 2 types of cabinets, each with very different materials, have their own material file. Finally, we sometimes make a very small quantity of completely P-lam cabinets on a job. Those are controlled by the final material file.
I use the wizard to find and replace core and specie the main file, and to add colour information for the P-lam file. I also use the wizard to set all the hardware information etc.