Can anyone offer me a suggestion on the easiest way to cut multiple slots in 3/4 ply so that I can interlock them? I am making a wine cabinet. It will have 160 4" openings. I want to cut 3/4 slots into the front of the vertical shelves and the back of the horizontal shelves and slide them together. Dado blades and router bits leave a rounded end but I suppose I could square them one at a time(ugh). Any suggestions gratefully accepted, even if for another method entirely. BTW, no radial arm saw is available.