The Woodshop Shed

adventures in woodworking and home maintenance, from my shop in an oversized backyard shed

January 2023
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Clayton Boyer's Deco Clock

Furnished content.
(from WoodNet.net)


Since I bought the CNC I've gotten interested in wood gear clocks. They are pretty poor timekeepers but fascinating mechanisms. When I get enough skill I plan to develop some original designs, but for now I'm building ones others have designed to learn the key concepts, especially as regards tolerances. You may remember a wall clock I built a couple of months ago. That clock has so many problems that about the most I learned was to never use any of their construction methods or design tolerances. After that experience I decided to buy Clayton Boyer's book on clock design. He has been building clocks for decades, so I figured he knows what he's doing. The bookis well written and covers most details required to build wood gear clocks. From there I decided to buy the plans for one of his clocks to see how his theories and methodslook in aclock of his design. Again, very well written instructions and detailed plans, both for folks who want to saw out the parts by hand from his full-scale drawingsand those of us using the dxf files witha CNC.

I chose to build the Deco desk clock because it's a desk clock and I liked how it looks. I don't have all that many walls to hang clocks, so a desk clock made sense whether I keep it or gift it to someone. A picture of the Deco clock on Boyer's website looks like this:

[Image: AL9nZEWKQ5zfVCob3dXZB60UsswmlTmiZa33UjlD...authuser=1]

This clock has a lot of details in how it's constructed that aren't readily visible once it's together. It's designed so that once the hands are set they will remain synchronized if you manually adjust one or the other. The wind mechanism for the torsion spring is very detailed in how the ratchet mechanism functions, which allows it to be rewound from the front. Anyway, lots of stuff going on behind the scenes that takes quite a bit of time to understand and then construct, even after the parts are cut out on the CNC.

I made my version from ash and cherry plywood that I made by slicing veneer and laying them up in my vacuum bag. You could use high quality commercialplywood but the species options are probably limited in the thicknesses needed, mostly 1/8",1/4", and 3/8". It looks like this:

[Image: AL9nZEUHQKxjUxRCPOOOYjMRenJZcVeUcgeRWcLQ...authuser=1]

[Image: AL9nZEUgTP4x3JKEyj9IqYgYZWVY48A3OL-iL7eA...authuser=1]

[Image: AL9nZEUObn5nqqTQtSWFH5knBgCy5dAQ1gauv-Og...authuser=1]

Unlike the wall clock, this one worked straight out of the gate, with only a little tuning required. The piece of wood hanging in the middle of the steel shaft escapement/pendulum shaft was added to stop the shaft from jumping in the frame holes, which ended up oversized after I rebored them manually because they were too tight off the CNC. It will be removed after I rework the shaft holes, somehow.

You can see the spring in the last photo. It has quite a lot of force, over 9 in-lb. That may not sound like much but it is when you try to uncoil the spring to install it. The spring is rewound from the front side using the key laying in front of the clock. It will run for 28 hours when fully wound.

I finished the clock frame, pendulum, and basewith Watco Danish Oil but left the gear train unfinished. Quite a project. Here's a link to a short videoof the clock running, in case you're interested.



John

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posted at: 12:00am on 07-Jan-2023
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Back in the Saddle

Furnished content.
(from WoodNet.net)


Haven't cut a dovetail in about 8 years, completed a drawer for a build in for practice before I start my next furniture project. I'm pleased with these:

.jpg  dovetail4.jpg (Size: 573.65 KB / Downloads: 139)

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Woodworking in America: Amanda N. Ewing

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(from Popularwoodworking.com)


We're interviewing makers from across the country. Today we're featuring Amanda Ewing, a luthier from Tennessee. I was chosen by my path not so long ago. Thanks to all of the twists, turns, and detours along the way, lutherie is …Source

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How can this be a shop tip?

Furnished content.
(from WoodNet.net)


My buddy was furious to see his Wood in his mail box. One guy said he bought a handscrew kit, followed the instructions and made his own handscrew out of wood. And Wood published it as a tip!!!!!!!

Simon

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Mobile, Sturdy Light Stand

Furnished content.
(from Popularwoodworking.com)


Good light is a must in every workshop, but sometimes I need a little extra light in just the right place. To make my light/magnifier more portable, I drilled a hole in a handscrew to fit the light's post. Now …Source

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posted at: 12:00am on 07-Jan-2023
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