DIY CFL Hood, cheep and easy with pictures.

Fozzybear

wocka wocka wocka!
Mar 16, 2011
818
0
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Alaska
Real Name
Ellis
Materials:

Fixture chain
4 x Eye hooks
36"x20" sheet aluminum.
4ish feet 1x6 board
7ish feet any board larger than 1x1
Tin snips or industrial scissors
Nails
Hammer
Clamp Lights or (see follow up posts for solid mounted ceramic sockets)

(If using solid mounted ceramic sockets)
Sockets,
15' lamp wire
crimps or wire nuts
electrical plugs


Materials
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Cut wood into a frame to fit your tank. My trapezoid endcaps were made 7 inches on the angles and 5 inches on the flat to provide 1 inch overlap with the 20inch tin to provide for derping...wound up wishing I'd just gone 7"x6"x7"
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Make sure that whatever you use for your long boards are more shallow than what you cap with to provide room for your lights.
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Begin attaching the aluminum on the square flat box provided by your wooden frame. Work from the center out to try to prevent warping.
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I chose to drive nails 1 inch apart across the whole thing to give it a pop-rivet WWII aircraft look...i'm partial to it in these types of applications. Screws can be used here, and spacing of up to 4-5 inches between fasteners would be appropriate. I used a yardstick and sharpie to quickly mark up.
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This part is stupidly simple. I don't have any good pictures of it...but using some left over scrap of my 1x2 board i drove in two platforms for the clamp lamp clamps at the ends of the hood. This way the clamp lamps are simply clamped into it and the wires duct-taped up.
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Attach eye-hooks to the hood and ceiling. Make sure to center them or your hood will lean.
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Fun little feature of the hook and chain, billiards style hood is that i just shorten up the chains for maintenance.
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I hope this thread proves helpful for ya'll and feel free to punch holes in my system or ask questions as you see fit.

[Solid mounted socket plan]

I have not actually constructed this yet so when it comes to practical application, your guess is as good as mine. Also, if you build this and causes a thermo-nuclear reaction and blows you up...its not my fault.

Start with the wooden frame from step whatever.
IMG_20110405_124234.jpg

insert a bugger something like this...drill out a hole appropriately sized to receive the ceramic socket.
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Wire the ceramic sockets with the lamp wire, putting the electrical plug ends on them.
Enjoy!

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I didn't realize that you had regular clamp lights in there lol. I definitely want to try the solid mount deal but the electrical wiring part is what I am totally clueless on.

While I enjoy hammering nails, I'd probably be lazy and use the staple gun and some heavy steel staples or brads to pin that aluminum down.
 
Staples work great with this stuff. I made that little cannister on the wall with staples and a heavy duty gun. Also if you look in the picture of materials you'll see the two little ceramic sockets
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with the white/black wire. From what the guy at Ace told me, you just wire those ends to the electrical plugs using the lamp chord and bingo! If soldering/shrink-wrapping or crimping doesn't work for you the wire nuts are an option. Hence my whole "I haven't done this yet so i'm not SURE how it works" disclaimer. The version of those sockets that i have thread apart in the middle, the diameter of the male fitting is 1". My plan was to provide a surface, parallel to the end caps, and about 3" towards the center of the hood. This would have a 1" hole driven through it, then I'd take apart the ceramic socket and thread it through the hole. I'm probably gonna get to it tomorrow or something. At this point its more of a proof of concept.

At the same time i may just get a couple of those standard florescent bulb fixtures and mount bulbs on the lateral boards...you could fit 4 28"s in there without modification, i'd think.
 
Solid mounting the lights.


I drilled close fitting 1 3/4" holes for the ceramic fittings.

Fit in the light sockets, with a rubber plumbing hose cap on the end to protect from water and to keep the fixture from falling through

Fitted a clamp to the inside edge of the fixture to keep it from falling out,

Until my hardware store stocks up on ceramic fixtures I tossed a clamp lamp in the middle. Soon I'll build a box in the center of the hood and put in two more solid mounts facing outward towards the other bulbs. making the fixture 4 x 42 watt CFL lights. (currently 3x 42 watt CFLs)

Total cost currently $65.


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[EDIT] I realized this needs a "before" for comparison.
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You are better off taking off the aluminum foil as the folds and creases in it are going to create more light scatter than reflection. White paint would actually work better on a smooth surface. Your use of flashing is fine, just not the foil.
 
Nice! I like it! Good light spread. Perhaps the second iteration could be a little shallower? But other than that great job!
 
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