Re: [TCML] sealing a cardboard form

[Bert Hickman <bert.hickman@xxxxxxxxxx>]

Hi Paul,

Thompson's is interesting stuff. The MSDS sheet says it consists of a 
water repellent wax (paraffin) dissolved in a white spirit (naphtha) 
carrier. When applied, the dissolved wax and carrier is absorbed by any 
porous materials. When the carrier evaporates, it leaves the wax behind 
as a water repellent treatment that permeates the full body of the 
material.

As a coil form coating, it may work. However, the residual wax may 
prevent any subsequent coating of shellac or varnish from adhering. If 
you do try it, let us know the results.

Bert
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PAUL THOMPSON wrote:
> Hello,
>
> I was wondering about using a commercial sealer instead of polyurethane 
> or shellac to stabilize a cardboard tube form. Specifically Thompson's 
> Water Seal. Any drawbacks to this? I would still use shellac to coat the 
> secondary winding, but anything wrong with using TWS on the bare cardboard?
>
> Regards,
>
> Paul
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