Homebrew PCBs

On 02/02/07, Len Warner <novost@...> wrote:
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> Don't bother with UK sunshine - unless you only want to
>  make boards for a few minutes on one morning a year.

lol your right their.


>  An ordinary fluorescent tube (or Compact Fluorescent?)
>  seems to have UV enough. Exposure time was fairly long
>  but bearable - of the order of 10min @ 10cm.

Now that seems a good idea, if 'standard' white tubes work, then all I
need is some 'energy saving' lights, usually about 8 or 11 watt, and
about £1 in netto, 4 of those, in four holders, and a wooden box,
change from £10, not £105 for action mans sunbed from maplin, should
be fine for 8*4 inch board


>  The exposure steps should be in a geometric progression,
>  not a linear one. This will not only give you equal increments

Now I should have thought of that, insyead of 1m , 2m etcm as I used
to take photo's for a hoby many years ago, thanks for remonding me.


-- 

Lez