Steve, just a plain jane handheld soldering iron. If I can remember where I put it when we moved in December
Hillbillyreefer and bvlester, the supplies came from different places. LEDs, drivers and optics came via the nano-reef.com group buy (better pricing that way). The housing was a freebie that was going into the trash elsewhere. Heatsinks were salvage/surplus from eBay (they aren't the prettiest but they were a third the price of buying a new heatsink and they'll do the job). Angle aluminum from a metal supply shop (Metal Mart; half the price for the same stuff at home depot etc. and they cut it to length for me). Stainless hardware came from Airarms (fastener supplier). The stainless bolts were like one third the price of the same thing at home depot
I really recommend buying supplies anywhere but one of the big box stores if you can. The stainless bolts were a great example. They were something like 40 cents each from an actual fastener supplier and $2.50 for a pack of 4 at Home Depot. Same for the aluminum angle. IIRC an 8 foot length at HD was $40 plus tax. Paid $20 at Metal Mart.
So all in so far I think I am in for around $1000 in parts, most of that being spent on the LEDs, optics and drivers. A couple of fans will cme from computer suppliers; probably NCIX or similar and the Arduino parts will probably be ordered from robotshop.ca.