old wiring fix tip from the this old house reader remodel issue 2012
Photo: Jasper White/Getty Images
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Old-Wiring Fix

Whenever you're working on old electrical wires, you risk damaging the insulation and exposing the copper. To avoid that, I thread some heat-shrink tubing over the wire and insulation, then hit it briefly with a heat gun fitted with a shrink-tubing attachment. The plastic tubing contracts to form a protective seal around the wire.

Max LeBlanc
Windsor, Ontario, Canada
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