I bought a 45mm Dritz rotary cutter, mat and ruller in a kit today at Joann's. It was on sale for $20 which seemed pretty good to me. Of course, I know nothing so maybe it isn't good.
I've cut some strips with it and it seemed to do what I expected it to do.
That being said, I've already figured out I cut the strips narrower than I intended! Yikes! Oh well, not to worry. The plan is to make a piano topper that resembles (stress the word resembles) piano keys. My topper will just have more keys than I thought! :D
Thanks so much for all your kind advice.
Lsia