[time-nuts] New +/- 1 sec in 100 days mech clock

Peter Torry peter.torry at talktalk.net
Tue Apr 21 05:30:32 EDT 2015

You could always use the traditional method of piercing saw and files. 
Thinking about it I suppose files were the original milling machine.  Be 
aware that the horological approach is different from the engineering 
approach and there are numerous traps waiting for the unwary.  Harrison 
and Martin's clock B have remarkable performance but could still be 
improved by using multiple pendulums to overcome the noise effects for 
example a two pendulum clock is performing within 1 second in six months 
(so far) so I will have to get the hacksaw out for the three pendulum 
version - or is it back to the GPSDO.


On 20/04/2015 20:51, Attila Kinali wrote:
> On Mon, 20 Apr 2015 09:59:06 +0200
> Attila Kinali <attila at kinali.ch> wrote:
>>> Mechanical, yes. Home brew, no. It is an absolutely stunning clock,
>>> both in beauty and performance.
>> Given the fact that a CNC milling machine can be bought quite cheaply
>> today, i would say that homebrew is easily possible. All you need
>> is a good understanding on different materials and how to machine them.
>> (This can be aquired using various machining books out there)
> Just to make sure there is no misunderstanding. What I ment here
> was, that once you have the plans, machining the parts and building
> the watch is easy. Comming up with a good plan is still hard.
> 			Attila Kinali

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