Re: Re: Building UV exposure unit (was Re: new to list)

I had it wired right but they just would not start. I should have been a little more clear about "assembled units". What I ment was assembled, complete two tube units. They have a piece of metal that snaps onto the metal box that holds the wires, etc. which is right next to the tubes. If you leave that piece off, the tubes won't start. Don't know why.

George
>
> From: Sandy King <sanking@clemson.edu>
> Date: 2004/11/03 Wed PM 09:47:59 GMT
> To: alt-photo-process-l@sask.usask.ca
> Subject: Re: Re: Building UV exposure unit (was Re: new to list)
>
> Not necessarily. You may need to tie the units together with a common
> ground. Most of the commercial two-tube units have a ground wire,
> attached to a green screw. Just tire the ground points together, then
> connect this along with the white and black hot wires, to a common
> three-prong outlet.
>
>
>
> Sandy
>
>
>
>
> >If you buy the assembled units they have the piece of sheet metal
> >already. The metal apparently grounds the bulbs. Without the metal
> >they won't start. They would start when I moved my hand to within
> >1/2 inch of the bulbs????????????? Spent several hours finding that
> >out when I built mine.
> >
> >George
> >>
> >> From: Dalyvoss@aol.com
> >> Date: 2004/11/03 Wed PM 06:21:10 GMT
> >> To: alt-photo-process-l@sask.usask.ca
> >> Subject: Re: Building UV exposure unit (was Re: new to list)
> >>
> >> Dave Rose wrote:
> >>
> >> "Welcome to the list.
> >>
> >> If you're handy with tools and able to design & fabricate, building an
> >> exposure unit is an easy weekend project. Construct a wooden box to hold
> >> your bulbs and bulb sockets. 1"x6" boards with a thin plywood
> >>backing works
> >> well. Position a large piece of sheet metal immediately behind
> >>the bulbs -
> >> otherwise they won't turn on. Go to a electrical supply house to buy the
> >> bulbs and associated hardware."
> >>
> >>
> >> Thanks for the welcome. Yeah, it's difficult to be a painter/artist type
> >> without knowing about power tools and fabricating.
> >>
> >> "Position a large piece of sheet metal immediately behind the
> >> bulbs -
> >> otherwise they won't turn on"
> >>
> >> Say whaaaa? Why would that be?
> >>
> >> susan daly voss
> >> NY
> >>
> >>
> >>
>
>
Received on Wed Nov 3 16:22:27 2004