Skip to the tools
BergeonThe job sheet
Brown Watch case Back Opening Ball 8007 Tool Anti-Scratch Protect
8007

Brown Watch case Back Opening Ball 8007 Tool Anti-Scratch Protect

4.9 from 10 notes

This tacky friction ball sits in the palm to turn threaded screw-off casebacks without steel pins or case keys.

$23.99

Prices are as the listing last showed them.

Reference8007
DrawerCase Opening & Crystals
What it isA tool in its own right
Bench jobOpening and closing a case

A threaded caseback often needs grip across its entire surface rather than purchase in narrow notches. We mold the 8007 ball from flexible, slightly tacky brown rubber. Pressed down with the palm, it conforms to flat or domed caseback profiles to break the thread or spin the back home.

Tacky rubber surface

The outer skin of the ball provides friction against smooth, polished, or brushed metal. It creates a wide area of contact across the back rather than concentrating torque on thin slots.

Palm fit and compression

The hollow body compresses under downward pressure from your hand. You hold the case in one hand or in a movement holder while bearing down and turning the ball with the other.

Threaded case opening

We use this friction method to start stubborn threaded backs or to spin free a back that has already been loosened. It leaves no metal shavings or marks from slipping steel bits.

Bench maintenance

Dust and oil from the bench will eventually settle on the exterior and reduce grip. Washing the rubber skin with mild soap and warm water restores the natural tackiness of the material.

Alongside it in Case Opening & Crystals

A note that touches this tool

Opening a stubborn case back

Snap backs against screw backs against monobloc cases, how a case key and its dies engage a fluted rim, why the case is held in a holder rather than in the hand, and what to do when the back has been opened badly before.

Read the note

8007

$23.99