Al Williams wrote:

> Be absolutely certain that ther is no light leaking from the
> enclosure. The best way to do this is to go in a dark room and turn it
> on. You might be surprised to see light coming through plastic panels,
> or from hinges. From what I understand, hard UV will burn your eyes
> and may cause skin cancer.

  The latter is true, but a bit of commonsense is in order.  As has been
mentioned before, most plastics absorb shortwave UV extremely well
(sunglasses quote "100%" absorbtion), so it is reasonable to assume that
light visible through the (white) plastic panels is just that; visible.

  I couldn't predict how much could leak by specular (shiny surface)
reflection, but most non-metallic surfaces tend to absorb UV also, so
light sneaking through *indirect* gaps should not be too risky either.

  Remember: 1) Intensity relates to distance.  Put it at the other end
of the room to your working area, so you are not staring at it/ sitting
next to it.  2) Tradesmen, not that it's advisable, but they certainly
do; experience massively greater shortwave UV exposure quite routinely.
You shouldn't expose yourself unnecessarily, they shouldn't either, but
it isn't a magical danger, unique to this piece of equipment!  They're
quite common in barbers' shops too; have you noticed?

  I haven't seen them in clothes dryers in this country.

  Cheers,
        Paul B.