Finally moving into a new place where I can have more than a shoe box-sized workshop.  I decided to make this clock so I don't have to drop and or get my phone dirty to check how late I've been puttering around.  Plus, being a solid chunk of concrete, I won't have to worry about it accidentally getting knocked off the shelf.  Making this takes some patience, but it is doable.  I may update or refine this Instructable down the line, but for now I like the more rustic look and feel of it.  Enjoy!

Safety gear!!  Definitely use hearing and eye protection, as well as gloves.  A dust mask or better is a good idea as well.  Working with the melamine and power tools, adhesive caulking, concrete and dyes can be all sorts of messy and dangerous.

3/4" melamine
1 1/2" drywall screws
drill/ screw driver
100% silicone caulk (not white)
razors/ exacto knife
scrap of rigid foam insulation
saw (table saw; (or circular saw and 4' straight edge and clamps)
framing and/or speed square
tape measure
pencil/ fine marker
wood dowel 3/8"
clear packing tape
cork board
5 gallon bucket
trowel or similar (to mix with) OR  concrete or mortar mixer (I used a hand held paddle type mixer)
clock movement
inlays for hour markers (I used Euro coins)

wet stone polisher and diamond polishing pads
concrete sealer
decorative aggregate (I used smashed black granite)
dremel rotary tool
glass fibers
compass (the geometry kind, not the "where am I?" kind)

Step 1: Design

It's always better to start with a plan; whether it's a drawing, or even just some ideas jotted down.  Originally I wanted to go big and make a ~16"x16" wall mount clock, but then I thought about a few concrete table tops I have experimented with and decided it would be better to scale down to a 12"x12" and make it a self-standing desk clock.  Besides, that made it more fun to come up with a design and then build the form.  I figured that if I tipped the face of the clock back a few inches so it about lined up with the back end of the base, and made it thicker at the bottom, it would stand up fine.  I tried playing around with some scrap plywood and 1/2"x3" strapping just to sort of double check. 
I drew it up until I liked the look, sketched it on graph paper so it was proportional, then scaled it up to real size on a drawing pad.   That looked good to me, so I measured everything and made a cut list for the form.  For the hour markers, start with a line at the exact midpoint to make a cross between 12/6 and 3/9.  Then take a protractor and mark every 30*  and mark those lines, making sure they go through the center point so that the hours line up properly (e.g. 1 and 7, 2 and 8 etc).  To mark the coins at an even distance from center, I could have used a compass if I could find it.  Instead I drilled a screw vertically into the center point.  Then I took some mason line (string etc will do) and looped one end around the screw, while wrapping the other end around a pencil.  With a few minutes practice I nailed a nice circle.  All these markings can go on the clock face form, but I wanted to sketch it up in detail first.  This might be overkill, but my OCD tendencies were in full swing.
Decided to follow your instructable with some modifications. Hit a little snag while trying to fit the clock works to fit inside the hole I made. Some of the concrete seeped into the wood cracks (used 4 small pieces ) and made the hole smaller than it should. <br><br>So I punched out the hole and trying to make a lip to put a piece of wood as a face plate. Operation salvage.<br><br>I have two clock works so I will try to rectify the issue when I make another one.<br><br>
I love what you did with the coins! This is very cool all around!
Thanks much! Yeah I was excited when I got the idea. The coins were leftover from a trip to Ireland I took 5 years ago, and I can't find anyone around to exchange currency in coin form. So on to another purpose in the clock! (fun fact - I tried to use coins to correspond with the hour. i.e. 2002 coin for the 2, etc. I didn't get them all, but most anyway)
I will need to make this
You should; fun and rewarding little project that is only limited by what you come up with really. Enjoy, and feel free to pick my brain; I'll try to help as best I can!
I love clocks! To me they are a very practical think to collect or build. I've made a couple of clocks myself. Thank you for posting your unique clock!
I agree; making things with a purpose is the way to go! Thanks for the comment, glad you enjoyed it.
What mechanism did you use for the clock gears?
http://shop.hobbylobby.com/products/3/4-mini-quartz-clock-movement-with-hands-44370/ <br>This is very similar to what I used. Apparently I should have been saying the clock &quot;movement&quot; instead of &quot;mechanism&quot; but I didn't know until finding that link for you just now haha I actually took the entire mechanism/movement kit off a clock with a wood base my Grandfather had made years ago, because it wasn't in use anymore and the hands matched the golden color of the coins. Hobby stores or websites have a ton of options to pick from if you want to mix and match hands and the movement itself.

About This Instructable


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Bio: At work, I am a mason. Stone and hardscape mainly. My favorite projects are when I get some freedom to design, and bring together multiple ... More »
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