[sdiy] tinning home etched boards?

[Tom Bugs]

Dan - I think you need to polish up your boards after you take the 
acetone off --- use wire wool / emery board / sand paper.
You want the copper to be nice and shiny - especially if its been a 
couple of weeks (or more) since you etched the boards.

ps - in my figuring -- your dremel drill should do you absolutely fine.!

Dan Snazelle wrote:
> the sizes i am using for traces and pads are the ones that YUSYNTH recommended.
>
> yes i am using acetone. nail polish version but it hasnt been a problem removing the black gunk.
>
>
> i think the size of the traces are great. and the pads WOULD be great if it werent for the fact the drill bit often goes a bit to one side or the other. this damn drel drill press is a hunk of junk in regards to drilling perfectly straight.
>
> maybe i just need more practice. and maybe i just need to use the smallest drill bit possible so if i screw up it wont take out the whole pad.
>
> also..part of this might be that all last week i was soldering the asm2 board which is pure soldering luxury..nice solder mask..good big pads,etc.
>
> and now i am dealing with pads ripping up!
>
> thanks
>
>
>
>
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>
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>   
>> Date: Sat, 18 Oct 2008 09:32:11 -0700
>> From: blincoln at eventualdecline.com
>> To: synth-diy at dropmix.xs4all.nl
>> Subject: Re: [sdiy] tinning home etched boards?
>>
>> Adam Schabtach wrote:
>>     
>>>> one thing that has been driving me crazy about
>>>> working with home-made boards is how poorly the solder STICKS
>>>> to the holes...i assume this is due to there being so little
>>>> copper to grab onto. correct?
>>>>
>>>>         
>>> It sounds like you've got some sort of residue left on your boards. Solder
>>> should stick well to bare copper. I haven't had a problem soldering to the
>>> boards I've hand-etched, although I have used a flux pen for the SMT work.
>>>       
>> I agree. Dan, you are cleaning the board with acetone after etching and
>> then rinsing the acetone off, right? Are you using pure acetone or
>> something with other stuff in it like regular nail polish remover (which
>> doesn't work nearly as well and will probably gum up your board)? Also,
>> how big are you making your pads and tracks? The first board I etched I
>> made to look like something a PCB fabricator would make for tiny SMT
>> parts (since it was what I'd seen most often, so it "looked right" that
>> way), and it was pretty hard to work with (and sounded crappy). After
>> that I made all of the copper sections as big as possible without
>> actually contacting anything else and it was much easier.
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