I have always been set on 20mm supported rails for my future wood router. I want to have the least amount of fuss, and a bolt together setup is appealing.
I basically planned on getting the round recirculating ball type rails, found at VXB.
I have an opportunity to get the type of rail, but in the 16mm version, for half the costs, which is pretty significant for me.
My big question would be if there is a significant difference between the 16 and 20mm sets. I imagine flex wouldn't be an issue with either, since they are both supported. As far as loads, I only plan on using it with a standard router, and doing wood and foam.
I've searched the site, but mostly see a lot of debate over how thick unsupported rails should be. Any advice or input would be greatly appreciated. I'll spend the money for the 20mm if I have to, I don't want to be greatly disappointed after the purchase. Thanks!