Most Common Types of Foam for RC
Tools to work with Foam
You can use hotwire, sewsaw, hot iron, hobby knife, etc.
One of the best materials is
Nickel Chromium (Nichrome)
Hot wire to cut foam
http://www.youtube.com/watch?NR=1&v=jM8U4WZ2klg
From Radio Shack...
Enclosure (8"x6"x3", #270-1809)
Transformer (25.2v, 2 amp, #273-1512B)
Bind Post (#274-661)
Banana Plugs (#274-721)
From Lowes...
Lutron Dimmer Switch (#D-600PH-DK)
Nuts and bolts, or rivets for mounting components
Additionally...
An old AC power cord (2 or 3 prong) with appropriate plug
Optional Parts I Recommend (also from Radio Shack)
Fuse Holder (#270-364)
Fuse (250 volt, 2 amp, #270-1023)
120 volt Neon Lamp (#272-0704)
http://www.instructables.com/id/Hot-wire-foam-cutter/
Needed Parts
12 foot 16 guage extension cord
2 wooden yard sticks from Home Depot paint department
4# 10-24 x 1.25" machine screws with nuts
10 # 10 washers
About 12 feet of strong, low-stretch string (i.e. 200 lb dacron kite line)
A single-pole dimmer switch. About $10 bucks at Home Depot
A 25 volt, 2 Amp transformer (2Amps for smaller size projects to up to 26 inches in lengh. More than that, you might need 4Amps). $10.49 at Radio Shack
An electric guitar string. About 0.10 - 0.16 size (guitar wire breaks).
A length of two conductor electrical wire with a regular plug on the end.
A piece of wooden dowel or stiff plastic rod about one foot long.
NiChrome Wire is used for foam cutting requirements from 24" to 53"
Inconel Wire is used for foam cutting requirements from 24" to 108".
http://shop.craftershotknife.com/cat...?categoryId=14
Hotwire cutter on sale
http://hotwirefoamfactory.com/-K47-P...-In-1-Kit.html
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Painting Foam Airplanes
https://www.rcgroups.com/forums/show....php?t=1526766