Making fairings for struts

[gizmos]

I am going to make my struts covers from blue foam covered with 3.8 oz fiberglass cloth. I made my hot foam cutter from "e" guitar string, small spring, 1x 4 pine wood for the bow. I am using a old DC transformer from a train set. Here is my bow and I will post photos as I go. I used an ihook and a rivet on the other to hold the string(metal)

Here is the foam. I used heavy speaker wire between transformer and bow. You can use 12 or 14 gauge house wiring