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Dchang81
·No matter what the quality of the screwdriver, you need to make sure it is properly fitted to the slot in order to prevent cam out. It should almost bottom out in the slot, and completely fill the slot.
Who designed the railmaster 1957 bracelet...
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Geezer
·Screw slots vary in size, so the screwdriver has to be individually adjusted to the screw. It doesn't matter how nice or expensive the screwdrivers are, they still have to be adjusted.
New blades tend to come with a tip that is very fine/thin. The tip has to be filed or ground down to get to the right thickness.
For this reason many watchmakers keep multiple sets of screwdrivers to avoid having to readjust their blades when switching between movements/brands using different slot sizes.
New blades tend to come with a tip that is very fine/thin. The tip has to be filed or ground down to get to the right thickness.
For this reason many watchmakers keep multiple sets of screwdrivers to avoid having to readjust their blades when switching between movements/brands using different slot sizes.
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Archer
··Omega Qualified WatchmakerIn my opinion, hollow ground blades are of limited use in most watchmaking tasks. I use them primarily for situations where the screws have rounded heads, rather than flat heads. With a very shallow slot like these screws, a hollow grind would be my last choice, as it would likely bottom out in the slot.
A standard V-shaped profile is what is used in most watchmaking tasks, on screws with flat heads. As noted, screwdrivers must be dressed for the application and screws vary in the width and depth of the slot. I use expensive screwdrivers, but they regularly have to be dressed for the specifics of the job.
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Dchang81
·In my opinion, hollow ground blades are of limited use in most watchmaking tasks. I use them primarily for situations where the screws have rounded heads, rather than flat heads. With a very shallow slot like these screws, a hollow grind would be my last choice, as it would likely bottom out in the slot.
A standard V-shaped profile is what is used in most watchmaking tasks, on screws with flat heads. As noted, screwdrivers must be dressed for the application and screws vary in the width and depth of the slot. I use expensive screwdrivers, but they regularly have to be dressed for the specifics of the job.
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Archer
··Omega Qualified WatchmakerI use VOH and Horia screwdrivers. But what you have are likely fine, again as long as you properly dress the blade.
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