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4hv.org :: Forums :: General Science and Electronics
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PCB related chemical concentration calculator.

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Daedronus
Fri Jan 11 2013, 11:29AM Print
Daedronus Registered Member #2329 Joined: Tue Sept 01 2009, 08:25AM
Location:
Posts: 370
Since right now I'm fooling around trying to make PCBs I did this little calculator for a few things I need, someone else might find it useful.

Link2

So far I added the values for copper plating, dry negative mask developers, POSITIV 20 developer, sodium persulfate based pcb etching.

the fine print: if you destroy your precious pcb or burn down your house using this, I'm sorry, but I assume no responsibility.
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Physics Junkie
Fri Jan 11 2013, 06:53PM
Physics Junkie Registered Member #7267 Joined: Tue Oct 16 2012, 12:16AM
Location: Detroit, Michigan
Posts: 407
The link is blocked. It says access must be requested.. But thanks for sharing, im interested to see the chart. I just started my very first pcb etching yesterday for a TC controller.


EDIT: I was able to access the link by logging into a different google account. Sorry for confusion. And thanks for posting the chart smile
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Daedronus
Sat Jan 12 2013, 01:41AM
Daedronus Registered Member #2329 Joined: Tue Sept 01 2009, 08:25AM
Location:
Posts: 370
Strange, it is definitely set to public view.
You will probably have to make a copy to change values.
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