This corner rounder really works on chipboard, acryllic, anything! It's not hard to squeeze and it fits in a tote or tool bag for easy transport to a crop, friends, etc. I have the 1/2" round pink one also....just love them both! Cut up all the chipboard that comes with paper into 6" squares (or any size you're in the mood for), round the corners, and presto...a mini book that looks finished....and it goes right through paper and chipboard if you want to do it in one step!
This tool is very easy to use. Cuts through chipboard and multiple sheets of paper easily. However, it doesn't cut a clean corner. There's a little notch left behind that I always have to snip off.