I have a very nice workbench with a 3/4" particle board top. I'd like to add a T-track system but don't want to route out the particle board to inset the tracks or route out a new sheet of 3/4" plywood that I would be placed on top of the existing tabletop. Instead, I'm thinking of first screwing down the T-tracks (a couple of long horizontal tracks and a few verticals) onto the top exactly where I want them, then cutting 3/8" plywood pieces in between to bring the tracks flush with the ply and countersink screwing down the ply in each corner of each piece. Does anyone see any problem with this approach? The reason I'm thinking of going this route is because I don't really have the room to route out a 32" by 96" piece of heavy 3/4" ply and my routing skills are still rudimentary, especially doing so in a way that ensures that all the routes are done exactly right.
Also, should the T-tracks be completely flush with the plywood or just a hair below? 3/8" plywood should bring it exactly flush with the T-Track. Thanks for your input.