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Subject: Re: Old GL FeCl -very slow etching copper

From: "James" <jamesrsweet@...>
Date: 2010-05-17

>
> FeCl also works best Heated. I would really recommend the Cupric Cholride, it works great. I use to use FeCl but now that I use Cupric Cholride I'll never use FeCl again. Cupric Cholride also does great just at room temp. so no heating.
>
> Ben
>


I found cupric chloride to be very slow at room temp, it benefits from heating even more than FeCl. HCl + peroxide certainly works fine at room temp though, until enough of it converts.