Make Your Own Foam

Cutting Bow

By John W. Dickie

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A Hot Wire for cutting foam (extruded polyurethane foam board insulation) is very easy to make and very inexpensive

baught all the parts for the bow at a

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local building supply. You can find the foam there also. I suggest the blue foam. My tests indicate that the pink foam is slightly brittle in comparison.

Parts list;  (Photo 1)

2--  ¼”20 X 2 ½”  Eye bolts. They don’t need to be that big; however, they do need to be that long.

2--- ¼”20 Wing nuts for ease of adjusting the tension on the bow.

2--- ¼” Flat washers, a package of 10 is $0.98

2—Electrical PVC conduit 90* sweeps.   Not 90* plumbing elbows.

1 – length of PVC conduit, or PVC water pipe. The photos show 1” conduit.

1 – small container of PVC cement.