Someone in another group also mentioned! Check out the carpentry tools! They have a cutter there, that takes rotary blades, just like we use in our rotary cutters, & the blades are cheap, like a 2pk for $1.50, so look for them when you are there! I checked the one here, but they were out at that time, but expecting more, so I plan to keep checking. I believe it's the 45mm size...