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        Thu, 14 Apr 2016 04:31:56 -0700 (PDT)
Subject: Re: [geda-user] Some PCB output
To: geda-user AT delorie DOT com
References: <570F22A2 DOT 9090007 AT ecosensory DOT com> <570F6C29 DOT 1060503 AT m0n5t3r DOT info>
 <20160414121940 DOT 2e2f853bf615a1532c626326 AT gmail DOT com>
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Date: Thu, 14 Apr 2016 14:31:54 +0300
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On 04/14/2016 01:19 PM, Nicklas Karlsson (nicklas DOT karlsson17 AT gmail DOT com) 
[via geda-user AT delorie DOT com] wrote:
>> On 04/14/2016 07:54 AM, John Griessen (john AT ecosensory DOT com) [via
>> geda-user AT delorie DOT com] wrote:
>>> I made a photoresist for the first time after many times doing toner
>>> transfer for prototype quick test single sided SMT boards. Toner
>>> transfer was always lots of scrubbing.
>>>
>>> http://ecosensory.com/geda/FET-leak-test-photoresist-1.jpg
>>> <https://u2655086.ct.sendgrid.net/wf/click?upn=NM-2BB8yPXqF3SI1y9Q83nXYyiE3TdYSrEhJrTVKxujckqUnfDtwANjC2ODtSr7ESNgI9btaLNak37N7P417S42K69TUTJpDp-2F2EXpghrcVqI-3D_kTMYR7gw96EXSJsK4eeHVzkKdlAq-2BspPcYaZStVviueZPrOCy7RTE89eNP02Y-2B5Ks6YvJPYVTSKAzGcfPHmJdru7z0JE4DZZVi268sy1vysVHEbjbXv9LgW2Mnpx7FG-2FxMvGpaxZKUVHDiWUpvTfB-2Fr-2Bm1EOqWEBp1AWURa5sWgXeei6np5cMYzxF-2FYRdaKd-2BAdiNWwXDnvFhmYOlrLFWU8Ptm1VYy0QiSQ3NwlyOf4-3D>
>>>
>> you'll find out that this kind of dry film resist also makes a decent
>> solder resist ;)
>>
>> too bad you can get it in any colour as long as it's blue
>>
>>> Scrubbing the photoresist was quick and mild compared to the tedium of
>>> toner transfer decal paper or photoprint paper removal. Doing it in
>>> the dark makes you think twice before committing to it though.
>>> Gathering all the stuff to do this took as long as a quick turn board
>>> fab job would have, but next time it will be quick, and I see that
>>> coming in a few more days…and quick turn only costs $60 on sale — more
>>> like $130 usually… I'll publish the new footprints for the SOT
>>> packages you see here tomorrow.
>>>
>> around here we have some kitchen stove cleaner that contains NaOH and
>> isopropyl alcohol + other uninteresting stuff, strips dry film in 2-3
>> minutes (will also strip skin, but much slower; still, gloves are a good
>> idea)
> It is important to put water in correct order then using NaOH or it could splatter into eyes.

nah, that thing is already a solution, and it's not saturated (it's 
supposed to remove hardened grease, not to burn holes); it's much safer 
to use than preparing one's own solution, comes in bottles with those 
hard to open ratcheting caps, etc.