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Cutter holder made, now its time to sort the blank ready for machining.
Much the same as for the wheels, knock a hole in the middle, mount on the mandrel and true up in the lathe
...

In a minor cockup I made the tool from 5/16th HSS. Turns out that the boring bar holder I indented to use it with would work with 1/4", but 5/16 puts the cutting edge in the wrong place.
*Sigh*...

Glad people are enjoying it.
I find it nice to share this stuff - my family has got so used to the impossible just taking a little longer than usual that they look bored when I share.
I really...

With the pinon pressed into the soft collet next thing is to bore it out.
Very small, light cuts needed, as the grip on the pinon is not very secure.

After boring to correct the concentricity and...

A long stick of pinion is not much use, so I parted three pinon shaped pieces off it.

https://i.postimg.cc/GhBVQZpC/IMG-6830.jpg

Then I could try a rough positioning of the the train. It all...

Been busy laying a hedgerow, so this took a break for a bit, but now that’s done it’s time to get on with it.

I managed to mis-index the pinions whilst trying at few extra things, and as a result...

Let me make one train first, then maybe I should make another and do the research directly...
Of course that would mean buying the cutters which the whole point was to avoid....

I'm not sure...

I have Wilds Wheel and Pinion cutting, though it’s a few years since I read it. I’ll have another look, but IIRC it just makes a statement to the effect of gear trains for clocks are cycloidal, but...

Do you have a source for that statement?
Dave

There are a few reasons, but mostly it boils down to being bloody minded and wanting to try something that is not normal ;)
Whilst traditionally the cycloid tooth form is used I have failed to...

Following a lot of reading about aspects of gear manufacture I've started on the Pinions.

When I get to Watch sized parts I think I might want to make a slightly smaller setup for cutting.
(Anvil...

Bit more progress, so a quick update.
I hacked out a couple of more wheel blanks, this time for 96 and 90 tooth wheels.

https://i.postimg.cc/HW9xcN7M/IMG-6122.jpg

Then bunged them in in the...

Brendan, I’ll take that as a complement :)
I have to make a couple of timepieces - one for each child...
New book on gears on order - these are involute tooth form rather than the traditional...

Ive made some wheels.
First trepan out some blanks, which avoids making loads of swarf just to get a roughly right sized blank.

https://i.postimg.cc/Dz2M191V/IMG-6046.jpg

2 cut out without a...

Had to make another cutter as the first one is too short to make a 144 tooth gear.
I printed out the 144 tooth gear to compare the lengths and clearance with:
...

One day I intend to make a watch.
I’m still a long way off, but tonight I made a good step in the right direction :)

A large part of a timepiece is of course the wheels and pinions. I’ve been...