Quote Originally Posted by Mainecoonmaniac View Post
I made a lightbox out of black light tubes. It works for salt prints, but for cyanotypes, it doesn't work well. The emulsion washes off when a develop it. Don't know why. I'll return to using the sun for cyanotypes. Looks like I'll have to buy need tubes. Any recommendations?
You can buy unshielded UV tubes for aquariums and such, I believe Phillips makes these in various lengths and you don't need a ballast. You can place them in any TL tube box and they work well for me, I've done Gum prints, salt prints and Cyanotypes with them, no problems at all.

If you need a type number or so let me know, I can look it up on the tubes.