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Picture of Drum Head Wall Clock
I did this project a few years ago and decided it would be a good idea to go ahead and post it online. I had an extra bass drum head lying around that I had no need for. I thought it would be neat idea to turn it into some sort of wall art. I finally decided to turn it into a giant wall clock. The hands are black and the black cent makes it hard to see, I plan to paint it white some day. 

Materials:
Drum Head
Clock mechanism

Tools:
Compass
Protractor
Ruler
Pencil/dry erase marker
sharpie/perm. marker


 
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Step 1: Find an appropriate drum head and find the center of circle

Picture of Find an appropriate drum head and find the center of circle
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My band teacher was throwing out old/unused drum heads, and I was able to obtain a 20-21" head for a bass drum. 
 
After obtaining a drum head, the next you will have to do is find the center of it. I don't have any pictures showing how I did it, but here's a video that I think is excellent in showing how (minus the Macintosh voice over.)
http://www.youtube.com/watch?v=P3CJ9oJ5pJk

Note: In the first step when you draw a line somewhere, I drew mine parallel with the Slingerland logo so I can make the clock lines parallel/perpendicular with the logo.   

Also, I would not suggest using a sharpie on the head as it may not come off and it will show through, mine reluctantly came off with a Mr. Clean sponge. But I would stay on the safe side and use a non-permanent marker or a pencil. 

Step 2: Making the marks

Picture of Making the marks
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After finding your center, you will need to make some marks on the back side of the head so you know where segments on the front will go. I didnt have any pictures for this step so a Made one up in illustrator. 

Teal: is that starting point, every mark you make will be based primarily off these. Also where 12, 3, 6, and 9 will go.
Turquoise: These lines will be the segments where 1, 2, 4, 5, 7, 8, 10, and 11 will be. every line should be 30 degrees apart.
Red: inner circle, where the lines will begin on the front side of the drum head. 
Blue: middle circle, where the turquoise lines will end on the front.
Green: Outer circle, where the teal lines will end on the front.
 
Use a compass to make your circles, you can make them any size that pleases you and also depend how big your drum head is. then use a compass to divide the circle in 12 segments. After that, use a ruler to make the guide lines

Note: these don't have to be bright colors, just something that you can see through the other side for tracing.

Step 3: Draw the lines on the front

Picture of Draw the lines on the front
After all that drawing on the back, it is now time to put the lines on the front . Using a ruler trace over the guide lines with a permanent marker to create the lines on the front.  

Step 4: Poking a hole and installing the clock

Picture of Poking a hole and installing the clock
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This step is pretty self explanatory. I used a drill to poke a hole in the middle, there are many methods and you can choose which works best for you. 

After you have a hole that fits your clock mech, assemble it to it together, and you are almost done!

Step 5: Putting on the numbers

Picture of Putting on the numbers
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The only solution I could think of when putting numbers on was to draw them, I couldn't find any stickers big enough. I am not the best drawer either and I am not totally happily with the results.
Later I found some Address numbers, And I think those would of worked the best, especially compared to hand drawing. 

Now your clock is finished and ready for hanging!