Re: [TCML] Quick and Cheap Toroid

[Jim Lux <jimlux@xxxxxxxxxxxxx>]

On 3/12/13 4:03 PM, Brandon Hendershot wrote:
> That's exactly like the one I had seen, only better. I've already bought
> the things to make it. And words of wisdom regarding spackling/filling the
> duct?


The smoother the underlying surface, the smoother the aluminum foil 
surface will be.  Something like automotive body filler (Bondo (r)) can 
typically be sanded smoother..

However, regular old spackle and some varnish or polyurethane can 
probably do just as well.

Important:  make sure the filler is DRY before putting the finish on.

You can use almost anything as a form underneath the filler.  Some 
structure is useful.  People have used inflatable tubes even.  You could 
cover it with stretchy fabric and polyester resin (e.g. a similar 
process to "silk" artificial nails).

Basically,it's a tedious hand sanding process, because it's toroidal..


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