Okay, I tried making a block "tube-style" as per the instructions, and my accuracy suffered big-time. I'm sure it's just "me", though, because that method has always thrown me for a loop (pun intended).
I'm going to try making one with individual 2-1/2" squares and see if it turns out any better. That's how I'm used to doing it, even though it's probably the hard/slower way.
