Making a New Balance Staff

[jdrichard]

I am making a new balance staff for an 18S Waltham. I think the balance is friction fit, however, my first cut 1.45mm was a bit too much and the balance fits but is not tight enough. I decided to leave a little lip so I can rivet it on as well (let's see how that goes:).

I then cut the hairspring part at 0.9mm and the pivot at 0.12mm; cut down to 0.2 and then reduced using a stone.

I had to move the Steel Rod out as I had worked my way in too far with a failed first cut on the balance part. I then cut the roller table side and angled the largest diameter.

Tonight I cut the lower pivot.

 

 

Sent from my iPhone using Tapatalk Pro

[jdm]

jdrichard, I've moved this thread to the appropriate section, please take the time to select when posting.

 

[jdrichard]

jdrichard, I've moved this thread to the appropriate section, please take the time to select when posting.
 

Sorry about that. Started off with the intent of just saying stuff and then got specific


Sent from my iPhone using Tapatalk Pro

[Pip]

Well I’m glad you did, an excellent post and I’m looking forward to the next part!


Sent from my iPhone using Tapatalk

[jdrichard]

Well I’m glad you did, an excellent post and I’m looking forward to the next part!


Sent from my iPhone using Tapatalk

Thanks.


Sent from my iPhone using Tapatalk Pro

[jdrichard]

Started cutting the bottom half of the staffSized it against the original staffGraved it down to about 0.2 mm and then filed it down to size with a stone and oilI then burnished itThen i fitted the roller table to make sure the staff was the right size.I then fitted the staf on its own in the movement to make sure the length was right and the 0.12 staff pivots fit into the upper and lower jewel. It was a little long so I mounted the staff in the lathe and tool a little off the top pivot.I compared the two staffsI Then fit on the staff loosely and assembled the unit as a final check prior to staking on the staff.All done for now. Tomorrow I stake on the staff and roller table and test again.


Sent from my iPhone using Tapatalk Pro

[jdrichard]

If in the end, this staff is too long, i can perhaps adjust the lower pivot or simply start over again.

[jdrichard]

Finishing the staff and riveting on the balanceUsing the Jacot, trimmed a pivot down and burnished themLower pivot was still to wide so put it back in the lathe to stone it down to size.Aligned the Hairspring and punched it on.It was complete and completed the install. Watch is currently running down with the new balance. Will completely disassemble and clean and oil and reassemble. DONE:)


Sent from my iPhone using Tapatalk Pro

[jdrichard]

Making a friction fit balance staff on a lathe is very tricky. As I was cutting a staff for a waltham, i took a little too much material off and the staff was not fitting completely snug.

So, i decided to leave a little lip so i could river it on.

 

 

Sent from my iPhone using Tapatalk Pro

[transporter]

Lovely work there and niceley rescued, im still at the stage of turning brass rods into filings on my lathe, not enough time practicing as of yet so havent started turning steel yet.

[jdm]

Topic merged with the original one.

Also, please check: 

 

[ecodec]

N

Nice job !.