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making very very tiny gears

Gratings

Lady friend picked up a clock at the thrift store. A very nice little clock, save that it is missing the knob/gear to set the clock. It is important, because w/o it the rest of the gear train doesn't stay 'rigid' and make the hands go round. It looks to be a press fit, so either dimensions are important, or I should consider a sort of spline to make sure it engages.

I'm thinking I can use a Dremel as a lathe, and just put a bit of something in the collet, and "turn to fit". Should I worry about toxic materials? (This is going into a day care when/if I get it done.)

Reply to
pyotr filipivich
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I'm easily confused. Just what parts are there and what parts do you need to make? Just the knob for the shaft, just the gear for the knob/ shaft, just the shaft?

Sometime in the last 50 years of collecting stuff, I found some brass gear material. This is a brass rod about 12inches long with gear teeth the entire length. I have several, but am not sure if they are all the same or not. I guess you just cut off the width of gear you need and finish it however you need. If you need the gear for the clock, I could go find the gear stock and see if it would work for you.

Paul

Reply to
KD7HB

It's called pinion stock or pinion wire, quite a lot of gear companies will have it so you just need to identify the size required if it's not an oddball.

Reply to
David Billington

Find your self a Web site that does old clocks or the like. They will have a souce for the parts. Setting up a dremel whatever will be a losing task for something like this.

BOb AZ ." =A0 =A0

Reply to
Bob AZ

Gut it and adapt a battery powered unit.

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Reply to
Jay Beldin

If you have a headstock Morse adapter, a drill chuck is nice for turning small parts.

Brass is toxic only in California.

Reply to
Jim Wilkins

"Jay Beldin" on Wed, 10 Nov 2010 20:11:48 -0500 typed in rec.crafts.metalworking the following:

It is a Battery powered unit. LOL.

I'm in one of those "It would probably be cheaper to get a new clock, but it's the challenge!" phancies.

Oh, and the knob is about .250 dia, and the shaft is ~.15 dia. OAL ~.300

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Reply to
pyotr filipivich

If the clock is battery powered, it's likely to be metric:

Shaft: 4mm = 0.1575. (But 5/32"= 0.1563.)

Diameter: 6mm = 0.2362".

OAL: 8mm = 0.315"

Anyway, one can buy many kinds of metric knob, made of brass and aluminum.

Joe Gwinn

Reply to
Joseph Gwinn

I'm looking at a floor lamp adjacent to my computer. It has a switch that you turn (rotate) to light the lamp. This one is approximately the size you describe, and made of brass colored metal.

Take a look around your house for something similar. Perhaps the knob will be close enough.

technomaNge

Reply to
technomaNge

news:alt.horology might be able to help.

Reply to
Michael A. Terrell

the knob and the shaft, although the shaft is the "critical part".

Reply to
pyotr filipivich

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