It's just common folding shelf brackets and basic hardware store fasteners. Select the folding shelf brackets based on how big you want the extension table to be. Even a small extension table can be quite useful. Sailrite was considering making one, so keep an eye on their site. Best
The shelf bracket is 14" on the long horizontal leg, and 7.5" on the short vertical leg. The table is 15" long, and same width as the factory table. The vertical support board is 8.5" tall, and 3/4" narrower than the factory table. Hope this helps.
Hi Liz, I'm not in the market to sell tables, but keep an eye on the Sailrite website. There were some murmurs they might start making them. Another option would be to get a full sized industrial sewing table, and make an insert for the Sailrite. Best of luck with it.