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Post by Pat on Feb 18, 2014 0:00:36 GMT -5
Meanwhile, back to my photo studio : ), I'm finding that the material I'm using to filter the two small lamps is causing the lamps to get too hot. I tried cheesecloth and that was too hot, too.
I have a plan for tomorrow, but was wondering if anyone had an idea that works. Thanks.
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jamesp
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Post by jamesp on Feb 18, 2014 1:31:39 GMT -5
Maybe those covers that go recessed lighting are of a higher temp plastic Pat. They are 24" X 24". This photo is of honey comb covers. But most offices have sheet plastic inserts.
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jamesp
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Post by jamesp on Feb 18, 2014 1:36:25 GMT -5
You might look up Lithonia Lighting Pat. uh, replacement lenses. I am sure building codes require fire/high temp proof covers.
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Deleted
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Post by Deleted on Feb 18, 2014 11:30:00 GMT -5
Is there any way to separate the the filter and the lamp like maybe two or three inches. Back in the old days there were wire frames that held the filter far enough away from the lamp to keep it from burning. Frosted glass is another option but you damn well better not touch it, your fingers will go up in flames. Halogen work lamps have a glass front that you could frost yourself with some kind of sand blaster or grinder. They will take a huge amount of heat. Jim
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lparker
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Post by lparker on Feb 18, 2014 19:07:14 GMT -5
Meanwhile, back to my photo studio : ), I'm finding that the material I'm using to filter the two small lamps is causing the lamps to get too hot. I tried cheesecloth and that was too hot, too. I have a plan for tomorrow, but was wondering if anyone had an idea that works. Thanks. I use 2 - 30 watt daylight CFL's - not much heat. Lee#1
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Post by Pat on Feb 18, 2014 20:30:10 GMT -5
Meanwhile, back to my photo studio : ), I'm finding that the material I'm using to filter the two small lamps is causing the lamps to get too hot. I tried cheesecloth and that was too hot, too. I have a plan for tomorrow, but was wondering if anyone had an idea that works. Thanks. I use 2 - 30 watt daylight CFL's - not much heat. Lee#1 I use two 5000K, 14W pigtail bulbs. Sounds different from yours. Is it? They do generate heat when covered with a filter, but seem to be cool uncovered.
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lparker
fully equipped rock polisher
Still doing too much for being retired!
Member since March 2008
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Post by lparker on Feb 19, 2014 8:25:07 GMT -5
Don't know - I use a light tent. But if I didn't, I'd tape my filter, whether a piece of cloth or tissue paper, to the top of the lamp, not tight all around so as to not block circulation. You can see the result of my set up at stores.ebay.com/rockdude68
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Post by Pat on Feb 27, 2014 14:19:20 GMT -5
@wampidy, Jim, that was my idea, too, to get some air space between the lamp and filter. I like your wire idea; probably more sturdy than pill lids! 1 - IMG_2097 by Pat6489, on Flickr This is the lamp that was overheating. There are two of them. The appendages on the top, left and right are plastic lids from pill bottles. 2 - IMG_2098 by Pat6489, on Flickr Here is a front view of the lamp cover. It is sports nylon fabric pulled taut in a 10" embroidery hoop. Lamp is 8" diameter. 3 - IMG_2096 by Pat6489, on Flickr Side view with the lamp on. 4 - IMG_2099 by Pat6489, on Flickr Side view so you can see how the lids hold the hoop with filter away from the lamp, so it does not get too lot. I wonder what the next challenge will be!
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Deleted
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Post by Deleted on Feb 27, 2014 14:37:43 GMT -5
Looks like you are getting it figured out. Jim
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jamesp
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Post by jamesp on Feb 27, 2014 15:39:57 GMT -5
You can drill holes in those reflectors to let them vent Pat. It does not take much wattage to heat up if there are not vent holes.
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Post by gingerkid on Feb 27, 2014 18:25:51 GMT -5
Thank you for creating this excellent post, Ms. Pat! Have it bookmarked for reference!!
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Post by Pat on Feb 27, 2014 18:27:11 GMT -5
jamesp, I thought of that, but was concerned that the light coming through the holes would interfere with my photo. What do you think? There are already three holes at the very base of the light bulb.
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jamesp
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Post by jamesp on Feb 27, 2014 18:59:23 GMT -5
I saw the 3 holes back near the socket. If you drill say 1/4" holes they will never be noticed. Because the light would mix, especially with the diffuser. The diffuser would eliminate any issues. I would drill about 20 holes equally spaced on the bulb side of the reflector(where the heat can rise out). Do one first and then compare it to the other. I would have mentioned that at first but i thought the reflector was glass Pat. The knitting ring was a cool idea.
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vugs
starting to spend too much on rocks
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Post by vugs on Feb 27, 2014 19:11:24 GMT -5
i used to use a similar diy lighting setup for macro stuff and if heat is building up you only need to use a fan to cool the bulb and recirculate the air behind the diffuser. you'll be surprised at the difference it makes just getting some air to pass through there. i eventually got one of these and it works out great.
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Post by Pat on Feb 27, 2014 20:01:08 GMT -5
vugs, what is that? I'd like to check it out. Looks like there is top and bottom illumination, and looks like the top can be tilted quite a bit. Is it this: www.adorama.com/VRPPS.htmlPorta-Trace Porta Studio, Portable Still Life Shooting Table wiht two 10"x 12" light boxes? ~$150
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Deleted
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Post by Deleted on Feb 27, 2014 20:02:35 GMT -5
Pat, is your "studio" setup permanent? If so, you have my undying envy. What is that you said? The difference between jealousy and envy? Envy = I want what you have, but I want you to have it too. Jealousy = I want what you have and for you to have a feather up ur bum. That way we're both tickled! jamesp - ur just showin' off again........... lol
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Post by Pat on Feb 27, 2014 20:14:42 GMT -5
@shotgunner, yes, it's permanent. It is about 3' x 3' on a little cheapo shelving unit. The softbox lighting just takes up air space. It's in the corner of a very small room. Yes, I'd like for you to have a permanent setup, too.... and a feather
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Deleted
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Post by Deleted on Feb 27, 2014 20:17:59 GMT -5
No room for permanent photo studio. But envy is all I have. Well, I do have feathers here too................
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vugs
starting to spend too much on rocks
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Post by vugs on Feb 27, 2014 21:50:34 GMT -5
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Post by Pat on Feb 28, 2014 0:31:14 GMT -5
vugs, that looks exactly like something I could use, and it's only the size of a piece of copy paper. Can you show me some photos you took with it? I like the Scovil seamless paper sweep. Thanks, Pat
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