Re: Cardboard Heater Plenium Chamber

Posted by Rusty O\'Toole On 2008/6/11 16:32:23

If you really want to be a "hero" you could make a mold off your cardboard plenum and make new fibreglass replicas.

It's not that hard. You would have to take the plenum out, "restore" it to like new shape even using tape, plaster, plasticene or whatever so long as it has the right shape and appearance. Then, cover it with hydrocal plaster reinforced with burlap bags - this is about the cheapest way to make a mold.

Carefully take out the old plenum, now you have a mold that can be used to make all the plenums you want. Use mold release agent (kitchen pan spray will do) and don't knock it about, and you should be able to make dozens of plenums before it wears out.