[Prev][Next][Index][Thread]
Re: Rubber toroids
From: Wes A Brzozowski[SMTP:wesb-at-blue.spectra-dot-net]
Sent: Tuesday, October 28, 1997 5:23 AM
To: Tesla List
Subject: Re: Rubber toroids
On Sat, 25 Oct 1997, Tesla List wrote:
>
> From: Alfred A. Skrocki[SMTP:alfred.skrocki-at-cybernetworking-dot-com]
> Sent: Saturday, October 25, 1997 5:54 AM
> To: Tesla List
> Subject: Re: Rubber toroids
>
> On Thursday, October 23, 1997 2:29 PM DamDeName-at-aol-dot-com
> [SMTP:DamDeName-at-aol-dot-com] wrote;
>
> > Hi Ed, et al ---
> >
> > You are correct --- it is Copper Sulphate (CuSO4-5H2O )
> > The proportions and conditions :
> >
> > . Copper Sulphate ------------- 26-33 oz/gal
> > Sulphuric acid ------------ 4-10 oz/gal
> > Conditions :
> > temp F ------------ 70-120
> > current density (asf) ------------ 20-100
> > Agitation ,cathode and/or air ----- preferred --- ( no air for baby
> > shoes )
> > ratio cathode to anode ------------- 1:1
> > Anodes ---------------- Copper
> > filtration : continuous preferred --- esp. for heavy deposits (as in
> > electroforming)
> > Voltage ------------------ less than 6 volts
> > generally
> >
> > Source : ---- electroplating engineering handbook ---third edition
> > hope this helps--
> > Sandy
>
> The above soloution is fine IF you are going to submerge the object to be
> plated in the plating soloution (I'd love to see you try plating a 6 foot
> sphere that way) If you look at my origional post I overcame the size
> limitations imposed by immersing the sphere or toroid in the soloution by
> instead saturating the soloution onto a foam brush connected to the
> positive side of the power supply and using a painting action to plate the
> surface which is connected to the negative side of the power supply.
The method you are describing is known commercially as "brush plating",
among other things, and works fine with the kind of plating solution Sandy
describes. You can't be sloppy with it, you need safety glasses, should
wear old clothes, and definitely shouldn't be eating or drinking in the
vicinity of the apparatus, but Sandy's plating solution is the kind you
use if you want the plate to adhere more firmly to the work peice. The
solution you described may be acceptable, depending on your adhesion
requirements.
Wes B.
*****************************************************************************
* wesb-at-spectra-dot-net * "It's a magical world, Hobbes ol' buddy... *
* * ..Let's go exploring." - Calvin *
*****************************************************************************