Tried to post photo.
Anyway, use pressure sensitive sandpaper strips adhered to the cast iron top of your table saw. I have 2 grades on mine. Easy to remove/replace. It takes a little elbow grease, but it's a nice precise way to sand straight taper longbow limbs.
If you follow Flatline Bows on FB he uses that method after jigsawing his recurve limb tips. Seems to work well.