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Spectacular Johnny !
And an educational project for many of us.
Thanks a lot for showing "the making of …"
To avoid misunderstanding:
My remark was -not- to criticize this procedure, but caused by the fact that I thought (to my surprise) that the...
I (personally) don' expect that many will do this, because most mills have tension-levers to securely fasten the table/bed.
But if that (common)...
I have asked my friend, building a Riefler F type.
Here his answer, may be this can help another little bit ?
So I quote...
About the "free machining" INVAR.
Interesting information (even about cutter geometry!) HERE.
Well, last resort here....
I presume you also know the fabulous book-series: Präzisionspendeluhren (PPU) von Juergen Ermert.
A friend of mine, is building a Riefler.
He possesses the book from Dieter Riefler about his grandfather: Sigmund Riefler.
Do you know the...
As far as I can see here in this bob there are 2 nuts in the middle, which can probably adjusted by small pins (?) in them, just...
Showing your beautiful work so often to us, is VERY educational !
It's stimulates, to make your own small buildings, also to a higher...
Could it be the fastest way for an answer, to contact Robert Porter directly (via contact page on his website) ?...
No. IX. CLOCK-ESCAPEMENT AND SELF-ADJUSTING PENDULUM on JSTOR
May be above some explanation ?
This mechanism was made as an exercise-project for a young clockmaker about 35 years ago.
So it never was part of a clock. But …. of...
I was allowed to make drawings from an existing perpetual calendar.
May be of help ?
Some "regular" screenshots and a rotatable... 3D-PDF....
Clear now. Thanks a lot !
Enjoy all your contributions a lot (and do learn from them).
I'm so sorry, but I did not understand the procedure.
The depthing is clear of course.
This procedure gives -one- right distance...
Recently (November) I was in the Amsterdam Arts and Antiques fair "PAN" in Amsterdam.
PAN Amsterdam - Home
On the exhibition stand...
Really spectacular !+!
In fact same as John says above: The click has a better bite.
May be these pdf drawings usefull ?
They are from the small exercise -clock... from our clockbuilding-hobbyclub....