Today, I was in the Sherwin Williams paint store to buy paint for my bedroom and I noticed a roll of brown masking paper named "Easy-Mask" which was 9" x 180' at $2.79 per roll. It looked like the proper light weight, similar to newsprint, to use for paper-piecing. For $2.79, I thought that I'd give it a try since I'm needing to make a bunch of paper piecing templates for a current project. Well, it worked great! I just cut off 8.5 inch lengths and sent them through my inkjet printer for my 8" finished block templates. I didn't even change my settings for 8.5" x 11" letter size paper because I printed in Portrait only on the top 8.5" of the 9" long strip. So convenient and cheap!
By the way, the carpet cutter blades at Harbour Freight tools were on sale today at $1.79 for 2 blades. They fit the 45mm rotary cutters perfectly. This is way less expensive than the ones you get at the fabric store, even with your 50% off coupons. I'm no expert, but would think that you'd need a much sharper blade to cut through carpet than through fabric. However, I must admit that I haven't tried using the blades yet. If you want to get some, please note that these blades are not in the section of the store where all of the other blades are located. You may need to ask the sales clerk to direct you to the carpet cutter blades.