I got the idea from Ridgid's older folding table saw stand. The frame is all 2×4 pine. The wheels are circle-cut OSB. Inside the there is a track cut that a one-inch dowel follows, allowing the back legs to fold in on themselves. It then tilts up on the "foot", allowing the front legs to fold in. It's all locked in place with draw hasps. The top is a sheet of melamine board and mdf laminated together, making a 1.5 inch thick top. The fence is all mdf, with sliding faces to accommodate bit width. The whole top is trimmed with 1.5 inch thick oak, all set with a t-track, which the fence locks in. The top is cut to accept a standard router plate (Rockler). It is offset, allowing me to flip the table around if I need more surface area for larger pieces. The whole things folds up and can be wheeled around. The only drawback is that the router does have to be removed in order to fold it up. This is done simply by removing the router plate with the router attached.