Things You'll Need
Instructions
Work with Existing Surface.
Spread the quilt batting or a blanket over the tabletop to provide some cushioning.
Assemble the train track, taking note of the part of the table where the surface is uneven.
Place the train on the tracks and run the train to see if the padding solves the problem. The blanket will provide some cushioning, and if the height difference between one part of the table and the other part is small, the train will travel over the ridge without derailing. If that doesn't work, remove the blanket
Place a sheet of paper on the table in an area that has an uneven surface. Place air-dry or bake-to-dry clay on the paper. Press the clay out to make a smooth transition between the lower and higher areas of the table. Carefully move the paper and clay to the oven to dry according to the directions on the package. Repeat to make a clay bridge for every area that is uneven.
Put the clay bridges in place on the table, set up the train track and run the train to see if that helps. If it doesn't work, complete the steps in the next section to create a level surface for the train.
Create a Level Surface for a Model Train
Measure the length and width of the table. If you want to have an overhang, add up to six inches to each measurement.
Put on protective eyewear. Mark the dimensions on the plywood sheet, and cut it with the table saw or circular saw. Sand the edges to get rid of any large splinters, but you don't need to spend a lot of time sanding it in this step unless you want to paint the plywood. If you do want to paint the plywood, sand it smooth and paint it now.
Miter the corners of the trim molding if the ends are not already cut at a 45-degree angle. Even if they are pre-mitered, they may need to be cut shorter to fit the piece of plywood. Use the miter box with a handsaw, or a compound miter saw. Measure the correct length, then place the piece of trim in the miter box or on the compound miter saw. Set the blade at a 45-degree angle, and cut the pieces of trim, in succession, one after the other. Sand the cut edges.
Use the brad nailer or hammer and finishing nails to attach the wood trim to the edges of the plywood. Hold the trim flush (even) with the top surface of the plywood, and shoot brads through the trim and into the plywood. Place brads every six inches for the best results.
Sand the plywood and the trim to remove any splinters and to ensure a smooth joint where the plywood and the trim meet. If you painted the plywood, skip this step, but apply extra brads if there are any gaps between the plywood and the trim.
Place the plywood train table on top of the table and center it for stability. Assemble the track and run the train.