Plastic Knife

I use a lot of plastic in my model ships and the best way to cut this is to score a line and then snap the plastic along the line. Using a normal knife blade is ok but a better way is to use a plastic cutting knife. You can buy these knives but I have made my own. Below is a photo and a drawing of my knife. The blade is made from a large hacksaw blade ground to shape and sharpened.

knife1Home made plastic knife
plastic knife