Nickel-chromium  wire for DIY Styrofoam cutter.
Cr20Ni80 heating wire.
DIY tool for cutting Styrofoam.
Nichrome wire.
11.48 Ohms/meter.
0.35mm wire diameter.
1 meter = $1.6
Order Unit = by meter of nichrome wire only (not included adapter, wood etc ).
Photo attached is the way of DIY a styrofoam cutting tool which shown in youtube.
Not too sure about how to calculate. I used old adapter 12V 500mA and 9V 800mA.
Straighten wire by using 1 hand plier and 1 hand drilling tool, which shown in youtube.