There were question about Can I use my cricut expression machine or Cricut Mini cut Chipboard, the answer is YES the cricut expression machine or cricut mini can cut on chipboard. first of all you need to get a deep cut blade housing in order cut the chipboard, then you need to install the deep cut blade housing, set the machine in Speed 3 (Medium), Pressure Max or 4 (High) depend on how thick the chipboard, Blade depth 6 and Multi Cut 4. I requested a sample 0.50 thickness of chipboard sheet from ULine.com before I purchase a 470 pieces (case) of 8 1/2" x 11 chipboard sheets, they don't come with 12 x 12 in 0.50 thickness of chipboard sheets and they don't come with packs either. After that, I chose the Koala at Create a Critters 2 to do the test cut with my cricut expression machine and it did cut all the way though. You also can use cereal boxes or Soda boxes like pack of 12, that you don't need to use deep cut blade housing you just need to do multi cut 2 to 3 times and set everything in Max, but the sheet will be very thin and good for chipboard letters not for mini album.
"Cut @ 4 1/2" Inches"Happy Crafting !!!