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Old 05-14-2019, 12:42 PM   #10 (permalink)
freebeard
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That's the reason I don't like fiberglass. Instead of a rasp, use a Nichrome wire. This one (doesn't) work on D-cell batteries.



My parents used this very Lionel transformer to cut Styrofoam in a rig like a jig saw. A coping saw handle would be more portable.



The rasp leaves a shredded surface.
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