Homebrew PCBs

I have a standard X-Acto paper cutter that works (barely) for 0.031"
FR4.

Normally, I use #2 scroll saw blades on 0.062, which are good for
about a foot or two before they need to be replaced.  Fortunately,
they're cheap.  Next time I'm at the store, though, I'm going to pick
up a v-scoring bit and see how that works out on my router table.