On 26/12/16 19:12, Michael Black wrote:
On Mon, 26 Dec 2016, Doug White wrote:

For many years now, I have always used the black handle Xcelite Phillips
screwdrivers with the chrome shaft & black tip. I outfitted my
electronics bench with a fresh set a few years ago, and the #1 Phillips
tip is already toast. I took apart a dead stick vacuum cleaner today
that had a dozen screws down in holes, and I had to get my other #1
driver from my woodworking toolbox to finish the job. It is also
showing signs of excess wear on the tip.

Isn't the issue that there is some Japanese variant of the Phillips
screw, called something else, so while nominally a Phillips fits it,
it's not really a match?

So either you can't open the screws, or it ruins the screwdriver in
the process.

Michael
Are you thinking of a pozidrive screw, if so a Phillips screwdriver
shouldn't be used. See
http://bsfixings.uk/the-difference-b...and-pozi-screw and
http://mechanics.stackexchange.com/q...-phillips-head
and others. They're commonly mistaken and the wrong drivers used with
the wrong screw potentially damages both the driver and the screw.