Is anyone using Liquid Tin to tin their boards?

Discussion in 'General Electronics Chat' started by spinnaker, Jan 15, 2012.

  1. spinnaker

    Thread Starter AAC Fanatic!

    Oct 29, 2009
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    Is anyone using Liquid Tin to tin their boards?

    http://shop.vetcosurplus.com/catalog/product_info.php?products_id=936

    I always get mixed results. Some traces tin perfectly while none at all. It seems like sometime if I keep it in longer the worse results I get.

    I make sure the traces are nice and clean but still don't get satisfactory results.

    Anyone get good results out of this stuff?

    If you don't tin, I am really not interested. I know that is an option.

    But if you have another method other than the soldering method I would be interested.

    Has anyone tried electro plating?
     
  2. crutschow

    Expert

    Mar 14, 2008
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    If you have problems with some boards and not others then I suspect you have a contamination problem such as oil. How do you clean the boards?
     
  3. spinnaker

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    Oct 29, 2009
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    No not one board to the other.

    On the same board. Some tracks tin and others don't.

    I am not sure what else I can do to clean it. I clean off the remaining toner with acetone, scrub it with scotch brite, then wash with liquid soap, and rinse then dry.

    Don't know what else to try.

    Have you used the stuff? If so did you get good results?
     
  4. GetDeviceInfo

    Senior Member

    Jun 7, 2009
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    I used to tin but don't anymore, only because the results were not visually pleasing.
     
  5. lightingman

    Senior Member

    Apr 19, 2007
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    I never had good results from the stuff, so I got a roller tinning machine.

    Daniel.
     
  6. bountyhunter

    Well-Known Member

    Sep 7, 2009
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  7. spinnaker

    Thread Starter AAC Fanatic!

    Oct 29, 2009
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    I did some searching and some people use the crystals which I have not been able to find in the U.S.
     
  8. shortbus

    AAC Fanatic!

    Sep 30, 2009
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    Won't this, 'tinning', in the long term cause "tin whiskers"?
     
  9. Sparky49

    Active Member

    Jul 16, 2011
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    I don't tin - but hear me out!:D

    I have seen people use a chemical mixture - I'm not sure what you mean by tinning the board via soldering, and electro plating seems a bit over the top.

    Again, I've never done it myself, but the best results I've seen have been with these chemicals.

    One example here -> http://www.rapidonline.com/Tools-Equipment/Tin-plating-crystals-29475

    Sparky
     
  10. spinnaker

    Thread Starter AAC Fanatic!

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    Yeah those are the crystals I mentioned. I have not seen them here in the US.
     
  11. Sparky49

    Active Member

    Jul 16, 2011
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    Can you not order from Mouser?
     
  12. t06afre

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    May 11, 2009
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    You can seal your board with a plastic spray. Some sprays are made for use on PCBs. So resoldering is not a problem then re-work needed. If you do not apply a to thick layer. Which is not needed. For the hobbyist this is much better approach
     
    Sparky49 likes this.
  13. Sparky49

    Active Member

    Jul 16, 2011
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    I've been looking at those.

    They did look to be the better option, but I think I'll go for it now!:)
     
  14. colinb

    Active Member

    Jun 15, 2011
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    I use “Liquid Tin” brand which I bought from Mouser. It has worked fine for me, and my traces look very uniformly tinned. I find that tinning the traces improves solderability when I'm not going to solder the board immediately after etching, so that the copper traces don't begin to oxidize.
     
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