There is a brand new ruler out that has a diamond sharpener edge on one side that is suppose to help your blades stay sharp and when it was demo'd at a local store during the shop hop the owner said that a nick was taken off a blade he was using. I can not remember what brand it was, but the shop was 3 Dudes Quilting in Phoenix, AZ near Chandler. It looked interesting, but it is a frosted ruler and I don't care for the frosted ones. If anybody wants their number just PM me. They were the only ones of the 13 shops in the shop hop that had them.