Re: "best" former material?

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Original poster: "brian by way of Terry Fritz <twftesla-at-uswest-dot-net>" <ka1bbg1-at-mcttelecom-dot-com>

hi, i think you will find "Goop" to be a urethane polymer. still great stuff
for many things. cul brian
----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Wednesday, March 14, 2001 12:40 AM
Subject: Re: "best" former material?


> Original poster: "G by way of Terry Fritz <twftesla-at-uswest-dot-net>"
<nieporgo-at-email.uc.edu>
>
> >Hi Greg
> >
> >Is Goop a kind of acrylic or the glue use to make tape sticky ?
> >
> >Luc Benard
>
> Hello Luc,
> Goop does not seem to be either type of glue. It is a contact cement
> similar to modeling glue. Goop, however, remains somewhat flexible
> when dry. Two different brands of this glue are available in my part
> of the USA: Goop and Shoe Goo. i am not sure if they are available
> where you live. I also chose the Marine Goop because it is UV
> resistant.
>
>
> >P.S. I have 2 X ( 4.5" X 30" ) polypropylene pipe in my shop but I wait
for
> >a solution
> >before I use it . I don't know if it could work but I plan to wind the
coil
> >with an hair
> >dryer blowing hot air on the windings, may be the coil will contract
itself
> >went it cool
> >down ???
>
> I do not understand the problem. I used a section of low-density
> polyethylene to form my secondary. I sanded it (for roughing) and
> coated it with Minwax polyurethane. Then I wound on the wire {at room
> temperature :)  } and added about 100 coats of polyurethane onto the
> entire secondary. I have had no trouble with windings coming loose,
> as the polyurethane seems to bond well to the LDPE. My form does have
> a 4mm wall thickness, hence it is very rigid. I'm quite sure I could
> stand on top of it with no problem! :)
> Goop would not work well for coating a secondary. It is very viscous
> and 'skins' almost immediately. I would try a few coats of
> polyurethane on your form, then use epoxy to finish coat. Coating
> thickness builds much easier (and faster) with epoxy. I have not
> tested the epoxy-over-polyurethane method. If you like that idea,
> please test it before you build your secondary.
>
> Good luck,
> Greg
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