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 15:48:19 2004