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Subject: Re: [Homebrew_PCBs] Re: Some toner transfer experiments

From: Lez <lez.briddon@...>
Date: 2006-05-02

On 01/05/06, lists <stuart.winsor.lists@...> wrote:

>
> Not really true, I think.
>
> I was once told that, as a rough rule of thumb, if you need to estimate
> the impedance of an unkown speaker, measure the DC resistance and multiply
> by 1.4
>

So how long do I hold the iron on the toner?