The two main cutting knives are craft knives and scalpels. Craft Knife: easy to use easy to change blades can pull blade back for safety nice to hold to sharpen pencils cutting heavy board (I find it easy to get a right-angled cut with a craft knife because the blade doesn't rotate as easily as the scalpel does) The blades are universal and you can often buy big packs in hardware stores. Scalpel: easy to use bit scary to change blades at first super sharp and fantastic for … [Read more...]