please use the search function - we discussed this not too long ago.
2 methods:
dry film (i don't know about)
liquid resist
basically you need the "laquer".
this is sold in pressurized spray cans (good for occassional use, ready..)
and simply as laquer in other containers.
apply by spraying on OR "spinning" (mount pcb on spinning plate and the
centrifugal force spreads a center-applied amount evenly over the pcb (use
shieldig on the outside of course to catch excess))
be aware of dangerous dust (causes shorts etc.)
maybe dry in a box (dustfree and dark).
but use search please this is better described somewhere.
regards
stefan
On Tue, 1 Jul 2003 14:00:07 -0500, Neil <cobra_neil@...> wrote:
> Speaking of which, anyone here know what process/materials I need to
> sensitize bare copper-clad boards, for positive-exposure?
>
> Cheers,
> -Neil.
>
>
> On Tuesday 01 July 2003 13:41, Leon Heller scribbled:
>> It's a good idea to use the pre-coated PCB material fairly soon after
>> buying it, as the shelf-life is limited. I find I get rather poor
>> results
>> when using stock much older than about six months. I tend to accumulate
>> a
>> lot of odd-sized pieces of unknown vintage, so I need some sort of FIFO
>> technique.
>>
>> Leon
>
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