So, I've always been thinking that a UV exposure unit would be too big, bulky, and expensive, and so I'd resigned myself to using the sun. But an annoying weekend of underexposed prints (Cyanotypes) and the prospect of limited sunny weekends during the winter has me looking at other alternatives. Specifically, I came across the spiral CFL BLB bulbs that B&S sells here. I've read a lot of threads on this forum, and have just a few questions and confirmations before I go down this road; most people seem to use the classic bank of tubes, but there are some people reporting good success with these spiral bulbs as well. 1) Alternatives. The ones at B&S I linked to are $24 a bulb, while I've found what appear to be similar bulbs at higher wattages for lower price (about $10) here and here. Is there any downside to the cheaper ones? 2) I'm only printing up to 8x12. B&S recommend using 2 bulbs for 8x10, and other threads I've read on the board have suggested that this should probably be ok. Thoughts? 3) Mounting. Again, based on other threads I've read here, I'm thinking that two basic clamp work light fittings such as these should be fine if I just clamp them to something about 4-6" apart and put the print about 6" away? Most of what I do is 6x6/6x7 contact prints, with the occasional 4x5/4x6 and 8x12, and due to space factors (and significant other acceptance factor) I'm not likely to go any larger. This is the primary reason I'm interested in this solution, as two clamp lights are easy to store out of the way, whereas a large wooden box filled with tubes is not so easy. 4) I'm only doing cyanotypes at the moment, but am looking into the next process, probably kallitypes or some other iron-silver process. Any considerations with either process that would make this exposure method ineffective? 5) And last but not least, any safety considerations with these bulbs? I'm assuming not, since they mainly seem to be sold for use at parties, but it'd be nice to be sure. Thanks in advance for your help.