I became fascinated with wood lathes when I was in Junior High. I saved my money until I could buy my own lathe. Soon I wanted a bench or table saw, too. I decided to fit a saw blade to my lathe and make a table for it. The unit in the photo is not my first effort, but is an improved version.
Step 1: Blade Mount
My lathe uses a smooth shaft 5/8 inch in diameter. There is a flat spot ground into the shaft for attaching fixtures with a setscrew. Blade mandrels are available from various hardware concerns. This one slides onto my shaft and is secured with a setscrew. It has a 5/8 inch diameter threaded end with spacers, a washer, and a nut. Check your lathe. Some lathes use a hollow shaft with a Morse taper. You may need to get a special mandrel direct from the maker of your lathe.
Step 2: Mandrel and Blade
Here you see the parts of the mandrel laid out on top of a 10 inch carbide tipped blade. Notice the threaded end of the mandrel 5/8 inch in diameter.
Step 3: Build the Table
Pardon and ignore the paint splotch on the piece of old plywood leaning against the wall behind the lathe and saw table.
I used some scrap plywood for this project. That limited the size of the table parts to some extent. Make the top of the table as large as you like. What I made is about as small as you would want to use.
The construction is a simple box open at the front and back. The front is completely open to allow room for tightening the bolt that holds the table onto the lathe bed. The top of the table needs to be high enough so any pieces of work clear the top of the headstock when moved over the table. You also want the top of the table to be as low as possible to take maximum advantage of the avaliable blade.
Step 4: Back of the Table
I added this piece to the back of the table to give it stability and rigidity.