Reply by johnstoneb

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Posted on Good wood for wood geared clock?

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3100 posts in 2536 days

#1 posted 08-11-2016 10:34 PM

Baltic birch plywood for the gears. The torque on some of the gears is tremendous and you need the strength and stability the plywood provides. You risk stripping the teeth off the gears is you use solid wood and humidity cause extreme swings in accuracy even using plywood. You could try laminating some solid wood and that three plys would probably give you enough strength. You could try it with two plys might work. You need hardwood for the face and back supports as they also serve as bearing surfaces. Some clocks do have a brass insert for the shafts to run on but not all. I never had any trouble cutting with a scroll saw. You’re talking 1/4” to 1/2” max.
You can get quite a bit of contrast using hardwoods for frame and brackets and plywood for gears.

-- Bruce, Boise, ID

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