Re: New UV lightbox
I don't think so. Putting aluminum sheeting behind the lights "might"
give you a little more power because of higher reflectance. I never, and
my cyano exposures are between 4 and 10 minutes depending on what I'm
mixing up. Not sure why you would put sheeting between the ballast and
the wood though if a serious fault occurred it would burn through the
aluminum pretty quick anyway. You really pray the ground wire works if
something like that happens. My ballasts came with a ground wire which
were all tied together during assembly.
~m
Ken Sinclair wrote:
Hi all....
Becoming more than frustrated with s-l-o-w exposures (2 to 3 hours for
Cyanotypes)
in winter sunlight for exposing my alt work, I finally decided to bite
the bullet and
go for physical comfort and consistency (bypassing the trips out to
the sunlit deck
when the temperature is well below freezing) and build myself a UV
light box.
I have now taken possession of my set of new 20” BL tubes and
ballasts. A few years ago,
there was some discussion about “grounding” the ballasts. I am
wondering if something
like a thin aluminum (~ 1/32” thick) ‘sheet’ between the ballasts and
the ¾” plywood sheet
that support the BL tubes’ ‘tombstones’ on the underside. Would there
be any safety ‘benefit’ in
attaching a similar sheet of aluminum between the tubes and the ¾ “
plywood?
Ken
Quando omni flunkus moritati (R. Green)