I use the JAF cutting table also...somewhere I read to tape a quarter in the very center of the table...that way you can easily find your center for your backing and top by feeling for the quarter. That eliminates pretty much any guess-work in using the table. Since I spray-baste, I do this process outside and the table stays outside under an eave in a fairly protected area and comes in handy for other things but it does live out-side.. I know its not meant for that but seems to work out ok. Many years ago, I made use of our kids' trampoline!! that was pretty great..but still awkward. Large table tops work best..larger the better.