Hi all,
I built the UV lamp box by Think N Thinker, as per there drawing.
I use Ever-Muse Positive presensitized pcb for all my pcb's
exposure time 90 sec and I get very good pcb all the time.
bob
scratch_6057 wrote:
> --- In Homebrew_PCBs@yahoogroups.com, "leon_heller" <leon355@...>
> wrote:
>
>> I've uploaded a photo of my simple UV exposure unit:
>>
>> Photos>Leon's>UV unit
>>
>> The black-light UV tubes are mounted in ordinary 8W fluorescent
>>
> light
>
>> fittings. The box is made from MDF and wood, screwed and glued
>> together. A sheet of ordinary window glass that I had cut to size
>>
> sits
>
>> on the wood strips at the top of the side pieces. Exposure time is
>>
> 13
>
>> minutes.
>>
>> Leon
>>
>>
>
> Nice job Leon! A lot less complicated that the one that Think N Tinker
> describes. Lots of Questions; Did you consider white paint inside?
> Diffuser plate (milk white translucent acrylic) between lamps and the
> glass plate? Not getting any exposure variations from the areas
> directly above the lamps and the area between them? I see a number of
> people referring to various things as Black Light, `GROW'
> lights, `Aquarium' fish tank lamps, Bug Zapper lamps and I remember
> the `Black Light' lamps that had a dark blue or purple glass, (still
> see them every so often,especially around Halloween) what exactly was
> the INTENDED purpose of the lamps you are using?
> How about telling us the physical size (dimensions) of that exposure
> unit, PLEASE.
>
> Thanks
>
>
>
>
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