LED Concrete Desk Lamp




About: Discover woodworking, concrete, LEDs, home decor and DIY projects you'll love.

Intro: LED Concrete Desk Lamp

I'm excited to share the possibilities that can come from simple hand tools. In this instructables I'm going to make this awesome lamp. I made this lamp by hand and no power tools except a drill. I did it as a challenge. I was glad I took the challenge on, because this was a learning curve for me as well. It was a very slow and tedious process. If you have power tools and wish to make this lamp then you'll know which power tools to use. For viewers with less tools be sure to watch the video to get more info on the build. Find all the material used at the end.

Overview of the lamp

- 9 inch concrete base
- Mahogany wood
- Removable power plug
- ON / Off power switch
- Adjustable light head
- Removable plexi-glass light cover

Step 1: Making the Form

To make the form I used a large 9 inch vase. I took a piece of metal flashing wrapped it around the the vase and add tape to hold it in place. Then I placed plastic over the vase to keep the cement mix from making contact with the glass.

Step 2: Mixing the Concrete

Any concrete mix will work for this base. To make this mix im going to a two to one ratio (1 cup of cement mix and 2 cup of sand) then add water. I put construction mesh in the mix to strengthen the form.

Vibrate the form to get rid of the air pocket. Let the mix sit for three days. This should be enough time to cure.

Step 3: Wiring the Body of the Lamp

I found these small piece of Mahogany lumber in a near by dumpster.

All the cuts were made by hand on a miter box . The body of the lamp is made of two 1in by 2in lumber. The 1in by 2 in lumber is cut to a 22 degree angle where the wood meets the concrete base. See photos for all the measurements.

Clamp the 2 (1 by 2) together then drill out a hole for the power port and also the power switch. Mark and chisel out a track for the the wire to pass though the middle. Refer to the video for more info on the wiring circuit. Cover the connections using painters tape. Then add wood glue and clamps.

Step 4: Making the Light Cover

I used a 1/4 piece of plexi-glass cut it to fit the opening of then counter sink the screw holes.

Spray the plexi from the inside using spry frost. This will help hide the LED light strips. I also sprayed the ends to hide the wires connections.

Step 5: Installing the Led Strips

Cut each strips to length at the connection point. Peal and stick each strips side by side. Solder the strip to each other connect all the reds on one end and all the blacks on the opposite end.

Glue and clamp. After the glue is dried sand all pieces. Use wood filler if needed.

Apply your favorite stain. I didn't stain because I like the color of the lumber. I applied a three coats of wipe on poly as a protective layer.

Step 6: Attaching the Base

Drill a hole in the center of the concrete using a masonry bit. Insert the bolt then transfer the angler over to the wood. Drill a hole in the middle of the wood. Since im using hard wood the bolt im using will create threads in the hole. This will be enough to hold. If your using pine I would suggest using a threaded insert in place.

Step 7: Attaching the Body to the Lamp Head

Attach the two parts and drill a straight hole through the two. Make sure you have enough wire for the swing of the lamp head. Splice and cover the wire connection. Tie a knot or place a zip tie on the wire so it cannot be pulled out. Attach the light cover.

Step 8: Final Touch

I applied a clear coat to the concrete base. Then I added some rubber bumper to the bottom to protect any surface it may rest on. The lamp is complete. See below for all the items used in the project.

Materials Used
- Led http://amzn.to/2hHvE6y

- Power Supply http://amzn.to/2gNiG5I

- joint Nut http://amzn.to/2gNiG5I

- Toggle switch http://amzn.to/2gNiG5I

- DC Jack (inlet) http://amzn.to/2gNiG5I

- Wood glue http://amzn.to/2gNiG5I

- Metal flashing http://amzn.to/2gNiG5I

- Plexiglas

- Screws

- Painters tape http://amzn.to/2gNiG5I

- Cement and sand mix

- Disconnect connectors http://amzn.to/2gNiG5I

- Frosted Glass http://amzn.to/2gNiG5I

- Black Spray paint http://amzn.to/2gNiG5I

- Spray Lacquer http://amzn.to/2gNiG5I


- Miter box and saw combo http://amzn.to/2hHEcL5

- Clamps http://amzn.to/2gNmsMi

- Chisel http://amzn.to/2hnzHEt

- -Solder kits http://amzn.to/2gNAaPh

- Razor knife http://amzn.to/2hQdjAv

- Wire stripper http://amzn.to/2hnDD7Q

- Volt meter (optional) http://amzn.to/2gNkJXm

- Counter sink bit http://amzn.to/2hHAe53

- Wood drill bit http://amzn.to/2hnDeTh

- Masonry bit http://amzn.to/2gD8iKt

- Tape measure http://amzn.to/2gNnKXS

- Drill http://amzn.to/2hQe9gD



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    37 Discussions


    1 year ago

    well done..I have one question though.

    why did you used concrete? You could have used wood base itself..?

    Appreciate your effort..:)


    1 year ago

    Absolutely great!!!

    Your skills in woodworking, electricity and video production are excellent. I especially like the fact that you completed the project with a few, easy to obtain and inexpensive hand tools. Salvaging the wood is a great tip, too.

    I have but one suggestion. You should include in the video voice over the fact that LED lights are 12v (which you did) but you should also caution your audience that a special power transformer is required on the power cord if it is to be plugged into regular house wiring. It would also be helpful to point out sources for the LED strips and the power transformer.

    A+ for sure!

    2 replies

    Reply 1 year ago

    Thank you, you make a great point. I try to pack as much info as possible but always seems to miss something.


    Reply 1 year ago

    You missed nothing in what you covered. My suggestion was that you might have expanded the coverage to include power source information and make it an even better product than the very top quality ible you created. Well done, Glen. Don't second guess yourself.


    1 year ago

    Where is the switch?


    1 year ago

    Looks great and I love how you've done it without any power tools but a drill. Any problems with heat from the LEDs?

    1 reply

    1 year ago

    Really nice work. I appreciate the amount of detail in your instructions and the parts list at the end was icing on the cake. Awesome job!

    1 reply

    1 year ago

    Excellent tutorial and fabrication. Thanks for sharing. Being a novis with LEDs, you only needed to coned the reds + ?

    1 reply

    Reply 1 year ago

    Thank you . You connect both the black and the red. Red is positive, black is negative.


    1 year ago

    One thing, correct the spelling for the instructions-Or to On switch.

    1 reply

    1 year ago

    Awesome project, think maybe I will have to give this a try, thank you for sharing.

    1 reply

    1 year ago

    Great project and fantastic video.