RE: [TCML] sealing a cardboard form

[david baehr <dfb25@xxxxxxxxxxx>]

im thinking of ways to make a conical sec. form,...would several layers of cardboard stuck together with poly be a good way to go ?  I havent had much luck finding a 'pre made ' form,....prob something with a 14" base, maybe 18" high,....maybe 4" dia at da top..(approx )..thanks....

----------------------------------------
> Date: Fri, 24 Jul 2009 20:32:05 -0500
> Subject: Re: [TCML] sealing a cardboard form
> From: steve.ward@xxxxxxxxx
> To: tesla@xxxxxxxxxx
> CC:
>
> Hi Paul,
>
> Id think that if its not water-based (therefore, its oil-based), and dries
> clear, then its probably just fine for this. Im not sure if i see any real
> benefit over regular polyurethane, though, as i cant imagine it making the
> cardboard that much stronger.
>
> I use internal plywood baffles for my 48" long cardboard forms. 2 of them
> are 3/4" thick end caps, and 2 are 3/8" thick "baffles" placed about 32" in
> from each end to keep the tube nice and round and give it some strength from
> flexing. Its not a bad idea to varnish the wood before putting it together,
> but i didnt bother.
>
> Steve
>
> On Fri, Jul 24, 2009 at 1:20 PM, 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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