First post - want to build a cnc hot wire foam cutter

[Swarfing]

John i don't Keith needs to go that far with what he wants really. I bought all the parts to build a foam cutter before starting myself. Keith as i was going to base my original build on the same machine for exactly what you are doing The cheap driver should be fine as i have two here myself and used them on a much bigger machine. You can get the draw slides as a multi pack buy from Screw Fix, i would use ACME 12 X 3 instead of the threaded rod they suggest as it will give you the higher speeds. At the end of the day you are cutting foam not a hard dense material so no need for all the extra expense. If i may even suggest you look at belts as well as you could even loose some of the motors by linking each side, use one motor for each plain. By the time you get that Obeche over you foam should look a treat.