NiChrome Wire (NiCr) is the optimal cutting wire choice for Hot wire foam cutters. NiChrome wire has high tensile strength and a high melting point.
Nichrome V/Resistohm 80 Heating Wire for Portable Hot Wire Foam
Hot Wire Cutter
Hot wire CNC foam cutters 3D Foam cutting machines!
HOW TO: Build a Hot Wire Cutter - Forum - DakkaDakka
Shape large blocks or sheets of EPS, Geofoam, Roof Insulation and other structural and non structural foam materials on construction site User
Hand-held Hot Wire Foam Cutter w/100 ft Nichrome wire
9v battery made into a hot wire foam cutting tool - video
A200F Heat Cutter – Alòs Industrials
DIY Hot Wire Foam Cutter – Sun Lakes Model Airplane Club
Building a Quick & Dirty Foam Cutter – Norwegian Creations
Home made Adjustable Foam Cutter
How to Make Portable Foam Cutter using Nichrome Wire
Foam Cutters & Hot wire CNC foam cutting machines!
Quick/easy and (almost) free hotwire cutter for foam!
Controllers & Wire for foam cutting