Printed circuit board fabrication

Don Pearce wrote:
On Sun, 08 Feb 2009 11:43:28 +0000 (GMT), "Dave Plowman (News)"
wrote:

In article ,
TonyL wrote:
Quite. It is going to be a UV box, either home made or bought.

A selection of tubes he-

http://www.tlc-direct.co.uk/Main_Ind...s_2/index.html

Some fittings that might do he-

http://www.tlc-direct.co.uk/Main_Ind...lar/index.html

Or do a search for a twin ballast for the tube size you want.

A small toolbox with lid could be a suitable case, with a glass
platform fitted and sponge in the lid to press the transparency and
board to the glass.

Paint the inside white for maximum reflection - you might have to
make up a reflector shaped sort of ^^ in cross section.

They are quite pricey to buy due to low volumes of production -
although I haven't really looked on Ebay, etc. My guess is you could
make one at a parts cost of approx half of buying one.

Remember to print the transparency mirror image as you want the
'print' side in contact with the work to avoid refraction effects.

I made one years ago for the cost of four fluorescent tubes, holders
and ballasts. The box was wood, and the glass was a spare pane from
the greenhouse.

Incidentally I took care of registration of the two sides by stacking
the two artworks on top of the board, drilling a pair of holes at
diagonally opposite corners and eyeballing the holes to line things
up.

d

Hints&tips noted. Thanks all.