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hmmm, etched my first board today...

2005-07-02 by lcdpublishing

Well,

I can't say as it was bad or good, certainly nothing like the 
commercially produced boards I have worked with in kits.

The transfer process went good - I used that Pulsar brand Toner 
Transfer System paper.  I printed out the schematics (.012" wide 
traces which was part of my problem) on the paper.  Using an iron set 
at about 3/4 the way to MAX and pressed down hard for about a minute.  

I then let the board cool for a couple of minutes, placed it in water 
for about a minute and the paper came right off leaving the toner.

I used the circuit boards and etchant that comes with the Radio Shack 
starter kit.  I simply placed the bottle in some Tap-hot water for 
about 10 minutes to warm it. Poured it into the tray that came with 
the kit, put in the circuit board, and placed a small piece of wood 
under the tray so I could rock it back and forth (wave action).

In about 10 minutes, the copper was gone.  I then used the solvent 
that came in the kit to remove the toner and all was done.

The traces are a bit "pitted" in areas.  Some of the spaces between 
the traces didn't etch away completly.  I should be able to scrap away 
a small groove with a sharp hobby knife to create the gap needed.

It does appear as though they are good enough to be used (provided I 
can scrape away the material where needed).

Now, the next part I am unsure of.  I suspect I can solder it up as I 
would with any other board.  I suppose there my be some problems as 
the copper isn't tinned, but I hope to get past that okay.  After 
soldering and cleaning, do I need to do anything else?

TIA

Chris

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