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Quick & dirty telescoping lamp

kday

Member
Joined
Jan 22, 2010
Messages
5
Location
Boston
I've been lurking on this forum on and off for a while, and after I threw together this project yesterday it occurred to me that you guys might appreciate it. I'm sure I'm not the only one here with a pile of old brake rotors and some scrap EMT conduit lying around!

This lamp is made from an outdoor fluorescent floodlight ($25 on Amazon), a few bucks worth of fittings from the hardware store, and scrap:

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The 1/2 conduit telescopes inside the 3/4 conduit by way of a 1/2 EMT compression coupler (the center stop was removed on a lathe) epoxied into a 3/4 rigid coupler and a 3/4 compression fitting.

DSCF0004-1024x679.jpg


I went with the epoxy because it's too cold outside to experiment with welding galvanized pot metal :)

The base is an old brake rotor from the front of a Miata and some 3/16" steel scrap:

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When extended to full height, the base starts to get marginal. I just grabbed the rotor on the top of the pile. A slightly larger one might be better. This one would be overkill though:

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Anyway this is providing me some much needed additional lighting in my tiny garage. It seems to be working well, though I think I might shorten the tube a bit, to allow the light to be closer to the floor.

DSCF0007-679x1024.jpg


I need to find a grommet for the cord, other than that it's done. I'm pretty happy with it for the hour I have invested in it.
 
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kevin206

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Joined
Jun 27, 2009
Messages
14
Location
McMinnville, TN
I think that I'll have to put this idea to work. i work at a brake testing facility, so I have dozens of rotors each week. Plenty of conduit ends up in the scrap bins as well. i just have to score the light and some connectors.
 

srmofo

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Oct 15, 2009
Messages
6,161
Location
SW ohio
If you have a matching rotor, you can try doubling them up and placing a few tacks to hold them together. The extra weight should make it more stable without taking up a bigger foot print
 
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kday

Member
Joined
Jan 22, 2010
Messages
5
Location
Boston
If you have a matching rotor, you can try doubling them up and placing a few tacks to hold them together. The extra weight should make it more stable without taking up a bigger foot print

I think this one will should work fine -- I will probably shorten the pole anyway, and it's only unstable when it's 6-7' tall. I have at least a dozen old rotors outside my garage and most of them are larger than this one, but all of the larger ones have a different bolt circle so I won't be able to interchange without redrilling the holes.

I'm thinking about making a second one with two lamp heads. I could use one of the 323mm rotors I have for that, which is something like 3" wider than that Miata rotor...
 
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e-tek

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Joined
Dec 19, 2007
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10,690
Location
Saskatoon, SK
That works!

I just bought a 2-lamp stand for $20 in Canada, which would be about $12 in the US, so unless you have all the stuff on-hand.....
 

bobadame

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Joined
Dec 26, 2007
Messages
1,124
I posted these pictures in another thread but it fits here too. The red lamp is adjustable up and down. Works well under the hood of a car and it will go low enough to reach under the car too.
 

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kday

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Joined
Jan 22, 2010
Messages
5
Location
Boston
That works!

I just bought a 2-lamp stand for $20 in Canada, which would be about $12 in the US, so unless you have all the stuff on-hand.....

That's no fun! If I bought one all of the design defects would bug me, instead of being natural limitations of the materials :)

I don't care for the halogen work lights -- they get too hot. I looked for a reasonably priced fluorescent one before I decided to build this one.

(I assume you mean a US store would sell your lamp cheaper? When I was in Canada a few weeks ago the exchange rate was close to parity.)
 
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kday

Member
Joined
Jan 22, 2010
Messages
5
Location
Boston
I posted these pictures in another thread but it fits here too. The red lamp is adjustable up and down. Works well under the hood of a car and it will go low enough to reach under the car too.

That's cool. What do you use the magnifier for? I have one on my electronics bench for fine pitch soldering, but I'm not sure what you'd want to roll it around for.
 

bobadame

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Dec 26, 2007
Messages
1,124
That's cool. What do you use the magnifier for? I have one on my electronics bench for fine pitch soldering, but I'm not sure what you'd want to roll it around for.

I couldn't decide where to mount it so I made it portable. When I'm using my mill I use it to check a mill cutter for sharpness. On the other end of the shop is my work bench. Sometimes I need it there.
 

BWS

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Joined
Sep 3, 2006
Messages
923
Location
Mnts of Va
Nice.

We'd run into it and break it.......'cause thats what we do.If you can find a wheel that matches rotor's bolt pattern...that would be one way of increasing weight/footprint if needed.Good luck,BW
 

LutzTD

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Dec 31, 2011
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3,673
Location
Lutz, Florida
I like it. its funny I was watching Runaway Bride yesterday and the charactor Maggie (Julia, the reason I was watching) made lamps from bendy conduit and junction boxes. I was just thinking those would make great bench lights in a shop, this would be right in line :)
 
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