Homebrew PCBs

I found a Youtube video of plating through holes using home made solution and kit, does not answer the question as to how to protect the copper in the holes from the etch solution, but is fine for routed boards.
<http://www.youtube.com/watch?feature=fvwp&NR=1&v=KTNuTv_IQp4>


Malcolm

Malcolm wrote:

> does not answer the question as to how to protect the copper in the
> holes from the etch solution, 

He just repeat the same ink filling process (and surface scrubbing) with
is acrylic ink. There was another video with it, the ink was white (no
graphite in it). And he actually used toner transfer afterwards!!

Malcolm wrote:

>  does not answer the question as to how to protect the copper in the
> holes from the etch solution, 

Here he shows how he does it. Watch around 2m30s
http://www.youtube.com/watch?v=bD9imNIkTKM

Where is the video located where he uses the white ink?  Is the white ink
conductive?  


Jeff

>Malcolm wrote:

> does not answer the question as to how to protect the copper in the
> holes from the etch solution, 

He just repeat the same ink filling process (and surface scrubbing) with
is acrylic ink. There was another video with it, the ink was white (no
graphite in it). And he actually used toner transfer afterwards!! 





[Non-text portions of this message have been removed]

Before you get too wrapped into the plating process it would be a good
idea to check out the availability of the supplies. Acquiring a small
quantity of Sulfuric acid at areasonable price may not be possible for
me.  The other components look OK.

--- In Homebrew_PCBs@yahoogroups.com, "Jeff Heiss" <jeff.heiss@...>
wrote:
>
> Where is the video located where he uses the white ink? Is the white
ink
> conductive?
>
>
> Jeff
>
> >Malcolm wrote:
>
> > does not answer the question as to how to protect the copper in the
> > holes from the etch solution,
>
> He just repeat the same ink filling process (and surface scrubbing)
with

> is acrylic ink. There was another video with it, the ink was white (no
> graphite in it). And he actually used toner transfer afterwards!!
>
>
>
>
>
> [Non-text portions of this message have been removed]
>

Sulfuric acid is battery acid, and should be readily available. I even purchased some from a pool supply store once for use in reducing pH in swimming pools. Be aware that Muriatic acid (hydrochloric acid) is more commonly used for this purpose. You might be able to purchase from a scientific supply store if you have one in your area. I was able to buy Nitric acid from such a store in Denver, and I think they would have Sulphiric acid as well. Another possible source would be local metal plating shops.

Bob


[Non-text portions of this message have been removed]

Sulfuric acid should be available at (most) any auto supply store.  I 
got some at Autozone a while back, for anodizing aluminum.

Kerry


Bob Butcher wrote:

> Sulfuric acid is battery acid, and should be readily available. I even purchased some from a pool supply store once for use in reducing pH in swimming pools. Be aware that Muriatic acid (hydrochloric acid) is more commonly used for this purpose. You might be able to purchase from a scientific supply store if you have one in your area. I was able to buy Nitric acid from such a store in Denver, and I think they would have Sulphiric acid as well. Another possible source would be local metal plating shops.
>
> Bob
>
>
> [Non-text portions of this message have been removed]
>
>
>
> ------------------------------------
>
> Be sure to visit the group home and check for new Links, Files, and Photos:
> http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
>
>
>
>
>

Look at Walmart in the drain cleaner section.

On 01/31/2012 11:02 AM, Kerry Wentworth wrote:
>
> Sulfuric acid should be available at (most) any auto supply store. I
> got some at Autozone a while back, for anodizing aluminum.
>
> Kerry
>
> Bob Butcher wrote:
> > Sulfuric acid is battery acid, and should be readily available. I 
> even purchased some from a pool supply store once for use in reducing 
> pH in swimming pools. Be aware that Muriatic acid (hydrochloric acid) 
> is more commonly used for this purpose. You might be able to purchase 
> from a scientific supply store if you have one in your area. I was 
> able to buy Nitric acid from such a store in Denver, and I think they 
> would have Sulphiric acid as well. Another possible source would be 
> local metal plating shops.
> >
> > Bob
> >
> >
> > [Non-text portions of this message have been removed]
> >
> >
> >
> > ------------------------------------
> >
> > Be sure to visit the group home and check for new Links, Files, and 
> Photos:
> > http://groups.yahoo.com/group/Homebrew_PCBsYahoo! Groups Links
> >
> >
> >
> >
> >
>
> 



[Non-text portions of this message have been removed]