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| Plumbing and electrical cables are easily chased into the polystyrene face. This can be done with a router, Stanley knife, chisel or specialized electric hot wires. |
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| 1. |
Using the hot knife is a neat way to channel the polystyrene in readiness for the cables. |
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| 2. |
Plumbing is channeled into the polystyrene prior to the fixing of plaster or tiles. |
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