Rich,
I have your photos posted at:
http://www.stevezeva.homestead.com/
Look at STN-201 and STN-199. I'm not a fab guy, so I don't
have a clue what might be causing that contamination. I'm
sure there are others a lot smarter that will have a good idea.
A little off the topic, but Ramon Dehoyos sent me a pretty interesting
PowerPoint presentation of something called "The Falkirk Wheel" in
Scotland. It is a pretty amazing feat of engineering to replace traditional
locks when moving boats from one elevation of water to another. Take
a look at it, it's pretty cool. (I know it's not Friday yet, but I like to
flex my
new bandwidth...hehehe)
Kind regards,
-Steve Gregory-
Senior Process Engineer
LaBarge Incorporated
Tulsa, Oklahoma
(918) 459-2285
(918) 459-2350 FAX
|---------+----------------------------->
| | Stephen Gregory |
| | <Stephen.Gregory@L|
| | ABARGE.COM> |
| | Sent by: TechNet |
| | <[log in to unmask]> |
| | |
| | |
| | 03/28/2005 07:32 |
| | AM |
| | Please respond to |
| | TechNet E-Mail |
| | Forum; Please |
| | respond to |
| | Stephen.Gregory |
| | |
|---------+----------------------------->
>--------------------------------------------------------------------------------------------------------------|
| |
| To: [log in to unmask] |
| cc: |
| Subject: Re: [TN] Surface Contamination on Electroless Copper |
>--------------------------------------------------------------------------------------------------------------|
Rich,
That should be: [log in to unmask]
Kind regards,
-Steve Gregory-
Senior Process Engineer
LaBarge Incorporated
Tulsa, Oklahoma
(918) 459-2285
(918) 459-2350 FAX
|---------+---------------------------->
| | David Douthit |
| | <[log in to unmask]>|
| | Sent by: TechNet |
| | <[log in to unmask]>|
| | |
| | |
| | 03/26/2005 02:48 |
| | PM |
| | Please respond to|
| | TechNet E-Mail |
| | Forum; Please |
| | respond to David |
| | Douthit |
| | |
|---------+---------------------------->
>
--------------------------------------------------------------------------------------------------------------|
|
|
| To: [log in to unmask]
|
| cc:
|
| Subject: Re: [TN] Surface Contamination on Electroless Copper
|
>
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Rich,
Send a picture of it to Steve Gregory at: [log in to unmask]
He can post it on his web site and then we can help you!
David A. Douthit
Manager
LoCan LLC
Rich Olsen wrote:
>Hi,
>
> Has anyone seen the following?
> Surface contamination on top of electroless copper.
> It prevents plating and subsequent etching.
> It is both under the resist and in exposed areas during pattern
plate and
>etch.
> It is small on the order of a mil or two, but there can be lots of
it.
> It seems to be in streaks, a spattered appearance.
>
>thanks,
>Rich
>
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