Thanks Don!, I will work through that exhaustive list the you generously prepared and let you and the other contributors know the outcome.
Thank you, OZZY:smile:
-> posts merged by system <-
Thanks MFRC1956, I will try that as well.
Doug, even when the canon pinion is removed, the second hand loses about 12 seconds/min. I have thoroughly pegged all jewels etc.
Islandtimer, maybe you are right...I need to find a compass!
Henryb, the main spring looks good. I haven't seen a spring like it so would find it...
I have cleaned the O size movement ( number 7953080), burnished the pivots etc etc etc.
It loses about 4 hours in 24 hours.
The jewels are not cracked.
The hairspring is not fouling.
The speed of the balance seems slow.
The pallet "snaps" well enough.
The mainspring barrel does not seem to...
I don't know the grade of steel. The hole is about 10 thou'.
I work on pocket watches and I am hoping to make a tool that will allow me to create the overcoil on the hairspring. I saw a diagram of such a tool in a watch repair book.
Thanks everyone for your help.
I figured that if polishing pivots of the balances desired, then polishing ALL the pivots is also desired. I now see how that can't work.
I guess that I haven't wasted my money as I now see a different purpose for the collets.
I just bought 4 stepped collets with the intention of using them to hold the pocket watch wheels while I burnish them. My problem is that I can't get the burnisher into the collet, (because it is stepped)!!!
Have I wasted my money?
What is the real function of a stepped collet?
I have an Elgin 18s.
The roller jewel is 16.5 thou. and the notch in the pallet is 22 thou.
Are these dimensions compatible?(ie should the jewel be greater in dia.?)
Thanks in advance for any help.
I have found repeatedly that my graver is unable to remover broken balance staffs. ( I can MAKE staffs with little difficulty)
I am using a graver made by E C Muller.
Is this product of good quality?
Who is the best maker?