Connect with us

exists an etch resistant pen from corner drugstore/office supply ?

Discussion in 'Electronic Design' started by robb, Oct 1, 2007.

Scroll to continue with content
  1. robb

    robb Guest

    trying to touch up and fill in slight mishaps/gaps with DIY
    "laser jet" to PCB transfer resist ?

    after the transfer ....

    so i was wondering what to use to touch up the transfered resist
    trace image ?
    are there any "brand" ink/pigment pens at local office supply or
    corner drug that is known to work for this application ?

    thanks,
    rob
     
  2. Leon

    Leon Guest

    Staedtler Lumocolor 318-9 Fine.

    Leon
     
  3. Guest

    Hello Rob,

    Nothing is better than just doing the iron-on over and learn from the
    previous attempt. Clean your copper with a scrub pad thoroughly and
    iron with more heat and pressure, use the top edge of the iron. The
    paper your using may not have the right finish.

    More info on my webpage

    http://www.oldtemecula.com/theremin/board-etching.htm


    For a little touch up, I have had the best luck with Bic Wite Out
    pens.

    http://www.officedepot.com/ddSKU.do...Flag=true&y=15&x=32&Nr=100000&Ntk=all&An=text


    Black markers can work but the results are nothing to write home
    about.


    * * *
    Christopher

    Temecula CA.USA
    http://www.oldtemecula.com
     
  4. robb

    robb Guest

    Thanks Leon,
    i read about staedler pens used in plotters but...
    does that ink need to heat treated to work ?
    thanks again,
    rob
     
  5. Tom Biasi

    Tom Biasi Guest

    Try a regular Sharpie. It resists feric chloride and ammonium persulfate.

    Tom
     
  6. robb

    robb Guest

     
  7. JeffM

    JeffM Guest

    Christopher,
    I'd be nice if you would pick a Username to use instead of
    just duplicating your very long obfuscated email address.
    Agree. Don't get in a hurry. Prep is critical.
    Use a Green Meanie and detergent. Rinse and dry thoroughly.
    He may may not have the iron quite hot enough
    but otherwise either of those may tend to just spread out the toner.
    Again, I would say "Don't get in a hurry".
    Too short a dwell time with the iron
    is what I found to be my initial problem.
    LIFT the iron to move it.

    Don't get impatient taking off the paper/plastic either.
    Let it cool completely first and be gentle peeling/removing.
    The stuff for Xerox copies seems like a natural match.
    I used nail polish I got at the 99c store
    and cut the brush bristles at a steep angle to get a point.
    I found them completely unsuitable. The ink was just too thin.
     
  8. robb

    robb Guest

    Thanks for idea Tom,
    I planned to use a muriatic , peroxide , water etchant but i will
    try it out just to see
    rob
     
  9. Rich Grise

    Rich Grise Guest

    I once bought a special "resist pen", and except for the name stamped
    into the side, it was indistinguishable from an ordinary Sharpie.

    Cheers!
    Rich
     
  10. Clint Sharp

    Clint Sharp Guest

    I've used Staedtler permanent OHP pens successfully for many years for
    'simple' hand drawn PCBs and touching in blemishes in photoresist after
    developing. Also used them with PCB transfers (anyone remember them!)
     
  11. Sharpie. It resists ferric, ammonium, and hydrochloric.

    Jim
     
  12. Jamie

    Jamie Guest

    Use the permanent Sharpies. sold every where.
    in fine and large tip.
     
  13. Jamie

    Jamie Guest

     
  14. D from BC

    D from BC Guest

    One time I did consider searching for and trying out pens but decided
    not to. I didn't feel like making a special trip just for a pen.

    Instead I've tried the following alternatives:

    * Nail polish + brush
    * Small brush and spray paint.. (1st make spray blob on card board.)
    * Lacquer in medical needle.
    * Stencil and spray paint
    * Scotch clear tape
    * Over clear tape + rework with dremel tool
    * Silicone in medical needle.
    * Glue gun glue

    D from BC
     

  15. So your boards match your nails? ;-)


    --
    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
     
  16. robb

    robb Guest

    great, sharpie and hcl something i already have....
    thanks for reply,
    robb
     
  17. robb

    robb Guest

    Thanks jamie,

    and i learned there is an ultra-fine also , it makes a pleasant
    50-70 mil line well YMMV my hand is not so steady

    robb
     
  18. Tim Williams

    Tim Williams Guest

    Works for me. So far I've done four or five PCBs with a Sharpie. Helps to
    go over and re-ink the pattern, I've had one with somewhat spotty tracks-
    looked like wood grain.

    Tim
     
  19. Don't use blue or green Sharpies. The acid eats right through them.

    Jim
     
  20. crominator

    crominator Guest

    A Sharpie or fingernail polish. The fingernail polish is easier to
    use if thinned about 50% with acetone. Apply with a pointed brush.
     
Ask a Question
Want to reply to this thread or ask your own question?
You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.
Electronics Point Logo
Continue to site
Quote of the day

-