Homebrew PCBs

I use a soft rubber spoon that is used in pastry-making and remove all
bubles between PCB and plastic wrap.

now I must buy a new pair before my wife get enrage and oneshot me

On Mon, Jul 1, 2013 at 2:28 PM, Phil@Yahoo <yahoo@...> wrote:
>
>
> Haven't tried that but I doubt it would make much difference. The coating
> has to be covered with either a protective sheet or the mask itself, and the
> material flows quite easily under pressure. I find that the pressure of the
> glass exposure frame forces most of the material out to the edges, leaving a
> very thin coat (exactly what I want). A fairly small drop would be enough
> for most any size board if not for the fact that some will be trapped in the
> holes and enough is needed to ensure complete coverage without any bubbles
> before the frame is closed. Most of it ends up as waste, but even so, it
> doesn't take much. I bought 100 grams in each of three colors and I expect
> that will be a lifetime supply. I have not noticed any deterioration from
> sitting on the shelf. On the other hand, I've never used any guaranteed
> fresh, so for all I know I might be amazed how much better it works.
>
>
> --
> Phil M.
>
> ----- Original Message -----
> From: "cunningfellow" <andrewm1973@...>
> To: <Homebrew_PCBs@yahoogroups.com>
> Sent: Sunday, June 30, 2013 5:20 PM
> Subject: [Homebrew_PCBs] Re: shelving vinyl toner transfer
>
>> >Phil wrote:
>>>
>>> <SNIP>
>>> The key to success with the solder resist
>>> seems to be getting as thin a coat as you
>>> can use. The UV does NOT penetrate very
>>> deep at all. I've taken finished boards
>>> and placed them in the Arizona sun for
>>> half an hour and was still unable to cure
>>> the ink where it was too thick.
>>>
>>> <SNIP>
>>
>> Phil, Have you tried using a silk screen
>> too apply it?
>>
>> (A blank screen that has no diazo/pattern
>> on it)
>>
>>
>>
>>
>>
>> ------------------------------------
>
>>
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>>
>>
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>