Make a hot wire foam cutter:-It is a tool used to cut polystyrene foam and similar types of materials. The device consists of a thin nichrome wire.
How to make a Foam Cutter at Home? Awesome DIY project! Wow!
Hot Wire Foam Cutter - Woodland Scenics
Building a handheld Hotwire foam cutter and want to add an
How to make a SMART USB FOAM CUTTER with Just 5 mins
DIY Hot Wire Foam Cutter (No Soldering) : 4 Steps - Instructables
Simplifier - Hot Wire Foam Cutter
Make a Hot Wire Foam Cutter - A dual unit, handheld and table top