Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

----- Original Message -----
From: "sbdwag" <sbdwag@...>
To: <Homebrew_PCBs@yahoogroups.com>
Sent: Friday, February 24, 2006 2:46 AM
Subject: [Homebrew_PCBs] Success using Press-n-Peel and H202 HCL etch
solution (First Attempt)


> Enclosed below a photo of my first attemp at etching.
>
> http://www.wagsterstuff.com/photos/pnpsuccess.jpg
>
> Some observations
>
> Used a 3m 320grit scouring pad to clean the surface of the copper.
> Copper was slightly abrased from this technigue.
>
> Cut just the pressnpeel I needed and taped it to the paper to create
> my resist.
>
> Used a Industrial Permanent Ink Sharpie to touch up the resist before
> etching.
>
> Used 2/3 cup of H202 and 1/3 cup of HCL at room temperature gently
> swishing took about 5 minutes to complete the etch.
>
> Remove the Ink and resist using Acetone wearing rubber gloves.
>
> One comment its difficult to solder directly onto the ground plane
> with a 40watt iron because the heat is transfered away so quickly.
> Any good solutions to soldering onto a ground plane.

Use thermal reliefs, or a Metcal soldering station. Mine doesn't have any
problems with soldering onto ground planes even when using small tips so I
don't bother with thermal reliefs on my homemade PCBs.

Leon