I bring you a 3D Printable remake of a very popular all-plastic product from the world of WoodWorking.
This item provides forces in ALL FOUR directions for feeding your work through the table-saw.
This project is a mega-print, and will require a lot of time to produce.
I wouldn't recommend printing the giant flat piece with 2 slots..just make it out of wood or plastic if possible.
UPDATE
9/14/14 Found a blatant issue with hole alignment on the Front Support mating with the Front Grab; fixed.
Added recessed cut-outs for fastening the Front and Rear Grabs to the Heart, so they can mount "flush" without protrusions.
Please download -R2 versions of the pieces if available.