Re: Acrylic coil form for secondary

Acrylic does not need to be prepped the way PVC does, since it does
not absorb water.

However, it is very useful to first lay down a layer or two of varnish
or lacquer. Make sure you don't have runs. The best way to do this is to
apply the stuff while the coil form is being continuously rotated.
Use the same setup that you will eventually use to wind the coil.

Apply these prep coats in THIN layers, and allow each layer to dry
before applying the next.

Now, when you go to wind your coil, the wire will have something to grip
onto, and you will find it easier to do the actual winding.

Finish up by applying several coats over the finished coil. Again, have
the coil form continuously rotating. Apply several thin coats instead
of thick coats. This takes a bit longer, but makes for a much nicer looking

Fr. Tom McGahee

----- Original Message -----
From: Tesla List <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Wednesday, September 15, 1999 8:03 PM
Subject: Acrylic coil form for secondary

> Original Poster: Aric_C_Rothman-at-email.whirlpool-dot-com
>      I have on order a 6 dia x36 long piece of 1/8" wall extruded acrylic
>      tubing on order.  What kind of surface treatment is recommended prior
>      to winding?  Is acrylic hydroscopic (like PVC), necessitating sealing
>      prior to winding?
>      TIA,
>      Aric