Um, just thinking how to put a motor on one of those. A small electric job with a rubber wheel pressed against the blade... May splatter a bit if the toppings are particularly goey....
There being a odd number of us cutting a pizza or cake into equable bits had always involved more thought than I can sumon when the blood sugar is low so I have a big chopping board with marker lines on it to centre the circular food and give 5 equal pieces. If I mounted a rotating central spindle with peg holes in it, with a sharp point of course, I could grind a hook into the tip of a suitable knife and use it like a old school guillotine or cloggers knife....
Hows that for overcomplicating the process? Quick, to the patent office!
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