My interest is really piqued here. The top resembles the one I have for my Singer 27 treadle that was trashed when it was delivered to me (another woodworking project in process). What is the footprint of your treadle stand and your sewing machine? I can take some pics of the top I have with measurements and post them for you. If you are handy with wood you may be able to recreate the top you need.