Shannon, this one look easy
http://www.instructables.com/id/Professional-Home-Brew-PCB-Creating-a-solder-mask/?ALLSTEPSthe secret is the UV paint.
On Fri, Jun 21, 2013 at 3:12 PM, Shannon Haworth
<
shannon.haworth@...> wrote:
> What technique did you use to prepare the solder mask?
>
> Shannon
>
> On Thu, Jun 20, 2013 at 2:19 PM, timgmorris@... <timgmorris@...>wrote:
>
>> ∗∗
>>
>>
>> Sorry, haven't checked the list in a while. My source for the photoresist
>> was http://www.digole.com/index.php?productID=228
>>
>> The web store appears to be Canadian but the products come from China, so
>> shipping can be anywhere from a week to a month.
>>
>> It's a negative photoresist, so you need to invert the output of EagleCAD.
>> I use Arm & Hammer Super Washing Soda as the developer (1/2tsp per 1C of
>> water). I also use this resist as the solder mask, which works quite well.
>>
>> Some pics:
>> http://www.timtilities.com/index.php/electronics-menu/101-panel-2-pcb
>>
>>
>> --- In Homebrew_PCBs@yahoogroups.com, Misc Clark <clark.cone4@...> wrote:
>> >
>> > Tim! what is the source of the A6 sheets of photoresist?
>> > Curious in Charlotte
>> > Clark Cone
>> >
>>
>>
>>
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