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PCB photo/etch chemicals

Discussion in 'Misc Electronics' started by Ade, May 26, 2010.

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  1. Ade

    Ade Guest

    I'd like to, occasionally, make my own PCBs for "stuff". The key here is
    "occasionally"...

    I'm sort of assuming that, short of using a commercial fab house (which
    is expensive), I'll either need to use a "pcb-in-a-bag" type kits, or
    the various chemicals. I'm thinking that I can either do:

    Fotoboard + etch resist remover + ferric chloride

    or

    Plain board + photoresist + resist remover + ferric chloride


    Assuming one one of the above 3 options (bag, Fotoboard version or Plain
    board version), which is likely to survive the longest under a cupboard
    without the chemicals losing their ability?
     
  2. Rich Webb

    Rich Webb Guest

    You might consider the Press'n'Peel Blue stuff, used with the laser
    printer toner transfer technique. The sheets should be shelf stable as
    long as they're kept in the package and away from dust, debris, and
    excessive cat hairs.

    The most consistent results are probably obtained with a fuser, like a
    GBC laminator, although some folks report doing just fine with only an
    ordinary clothes iron. One could also use inkjet glossy photo paper
    (printed in the laser) as the transfer medium but that's a bit messier
    since the photo paper needs to be soaked loose in water.

    I get clean 10/10 results with the P'n'P medium, although 15/15 is more
    comfortable.
     
  3. Ade

    Ade Guest

    Good idea, yes, thanks. I'd read up about that stuff recently, but
    forgot about it when I posted. Ta for the reminder.
    The only hassle I've seen mentioned about the laminator is it needs the
    extra-thin boards, a full 1.6mm double-sided fibreboard won't go through
    it (according to the specs, at least).
    Apologies, I'm not familiar with what 10/10 or 15/15 mean? Is it the
    width of tracks/gaps in microns?
     
  4. Rich Webb

    Rich Webb Guest

    Once upon a time, the folks over at Pulsar
    http://www.pulsarprofx.com/PCBfx/main_site/pages/index.html
    had instructions on how to modify a GBC H200 model laminator to accept
    standard 1/16" (1.6mm) stock. I looked around over there and those
    instructions are long gone, as well as that laminator model. A link at
    http://www.picbasic.org/showthread.php/51159-.032-Pcb suggests that
    there was a UK model "GBC Docuseal 95P laminator" that may have been
    equivalent and *if* you can find one in working condition, we may be
    able to find or re-engineer the mods necessary.

    <clickty click> Aha! http://www.qsl.net/ve2emm/pcb/pcb_mach_mod_e.html

    For what it's worth, I did the mod and it does work with 1/16" now, but
    I have found that I actually prefer using 1/32" (0.8mm) material. It
    cuts with tin snips (or even heavy scissors) and there is less mess from
    drilling.
    Yes, but in US-ian mils (thousandths of an inch).
     
  5. the ferric chloride is good forever. just check the container from time to
    time. sometimes they do weird things like shrink or look sucked in.
     
  6. Ade

    Ade Guest

    OK, thanks. Can you give me an idea what products muriatic acid is in?
    Also, what concentration of h2o2? ta.
     
  7. Pete Wilcox

    Pete Wilcox Guest

    I've never seen the point, meself, in going to all the trouble of etching
    a board for a one-off project. Stripboard is far cheaper, simpler and
    quicker to use.

    Cheers,
    Pete.
     
  8. muriatic acid is hydrochloric acid. it's sold in 1 gallon jugs in the US
    at hardare stores. I'm not sure of the concentration, but even the
    smallest splashes will eat holes in clothing and burn skin.
     
  9. gostop2000

    gostop2000

    7
    0
    Jul 12, 2010
    This is Simon from Shenzhen Smart Power Technology Co., Ltd. One of leading PCB manufacturers in Shenzhen, China.
    We can provide all kinds of PCBs with the highest industry standards of quality within a short lead time.
    Our price is competitive because we have our own factory. This may reduce your purchasing cost. We are very glad to receive your inquire.

    Our most advantage as following:
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    Plugging vias
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    3 mil line space/width.
    Heavy Copper (up to 10 OZ.)
    Aluminum Based PCB (LED lamps, module)
    Max Panel Dimension: 1024mm*1024mm
    Mobile Phone Board
    Power supply module

    Please give my best wishes to you and your family.
    Sincerely Yours,
    Simon
     
  10. gostop2000

    gostop2000

    7
    0
    Jul 12, 2010
    PCB

    This is Simon from Shenzhen Smart Power Technology Co., Ltd. One of leading PCB manufacturers in Shenzhen, China.
    We can provide all kinds of PCBs with the highest industry standards of quality within a short lead time.
    Our price is competitive because we have our own factory. This may reduce your purchasing cost. We are very glad to receive your inquire.

    Our most advantage as following:
    Rigid-flex circuits (1-8 layers)
    Blind Buried via PCB (6-18 layers)
    HDI PCB (6-18 layers)
    Plugging vias
    Complex sample project
    3 mil line space/width.
    Heavy Copper (up to 10 OZ.)
    Aluminum Based PCB (LED lamps, module)
    Max Panel Dimension: 1024mm*1024mm
    Mobile Phone Board
    Power supply module

    Please give my best wishes to you and your family.
    Sincerely Yours,
    Simon

    ________________________________________
    Shenzhen Smart Power Technology Co.Ltd
    Tel: (86-0755)-29589452 Fax: (86-0755)-29589453
    Skype: gostop2000
    www.smart-pcb.com

    Add: Baoyuan Building 706, Baoyuan Road, Xixiang, Baoan, Shenzhen, China
     
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