This is how I do it, hope it helps someone else....
This may sound like it is in the wrong thread but it gets to the point.... I promise! lol
When I built my layout table (12'x6'), I used 4'x8 sheets of MDO plywood with a white melamine skin. On the edges of the plywood, I used a router set to a depth of appx 1/8" and put 12 gauge stainless steel angle on the edges. This allowed the stainless angle to be flush with the rest of the sheet. I butted the panels up but left appx. 1/16" between the panels for a knife blade. On the bottom side of the table, I mounted a strip of bright white LED's. This allows light to shine through this small gap and shows a nice sharp bright line through your material. This gap is so handy for cutting material and eliminates about 90% of any reason to be cutting material on your table top. (since melamine is pretty vulnerable to blades). I also made a sliding straight edge with a ruler glued to the top of it and a simple clamp.
With this setup, I am able to, very quickly and accurately, cut stickers to a consistent size with nice professional looking straight, square edges. Also very nice for cutting banners down to the hem lines and the light even shines through 18oz banner stock (without blockout)
There are cutters, guillotine shears and all kinds of other fancy equipment designed for this but sometimes the simplest setups are just as good as anything.
I attached the plans I put together for my carpenter that built my table. Like I said, I hope it is something that helps someone even if it is just a starting point to something that fits your needs specifically.