Homebrew PCBs

On Mon, Jul 8, 2013 at 10:34 PM, Todd F. Carney / K7TFC <k7tfc@...>
 wrote:

> On Mon, Jul 8, 2013 at 9:14 PM, AlienRelics <alienrelics@...> wrote:
>
>
>> In the '80s, I used bulbs that fit that description to expose negative
>> resist coated boards. . . . They were called "Gro" lights. There are
>> several brands, that was the one I used. Just a 65W reflector bulb about 18
>> inches away, clamped under a sheet of glass very close to what you describe
>> below.
>
>
> Steve,
> The bulbs I used were sold through graphic-arts suppliers. I haven't been
> able to find them by Googling yet. Maybe they're not made anymore. I'm
> pretty sure the Gro brand of grow lights is still around, though. I think
> I've even seen them at Walmart. Fish and aquarium stores have full-spectrum
> bulbs, too.
>
>
Damn me if I didn't finally figure out where to look! Google: "daylight
photoflood." Lots of high-wattage/lumens/color temperature bulbs to be
found made by several manufacturers. These are the ones I used in the *
Vorzeit--*in "the before time." If you have a decent camera or photo supply
store nearby (they're getting rare!), you might find them there.

Here's B&H in NYC, for instance:
http://www.bhphotovideo.com/c/product/808082-REG/Ushio_1000046_BCA_Incandescent_Photoflood_Lamp.html

Freestyle Photo: http://www.freestylephoto.biz/search?q=photoflood

Adorama:
http://www.adorama.com/searchsite/default.aspx?searchinfo=photoflood

If you're into photography, these outfits are probably familiar to you from
their big multi-page ads in the photo magazines.

One thing to keep in mind about these daylight photofloods is that you
might already have every other piece of equipment you need: a reflector
clamp-on lamp being the most elaborate.

73,

Todd
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K7TFC / Medford, Oregon, USA / CN82ni / UTC-8


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