I will assume by "sharpen" you mean "clean up", so it will grip screws firmly again. Use a small three-cornered file. Stroke in one direction only, and strive to keep the file straight and level. It helps to clamp the screwdriver diagonally in a vise, and work accordingly. DO NOT bring the tip to a "point" - the bottom of a Phillips screw head is rounded. Best way to avoid chewing up the tip of a Phillips screwdriver is to use the correct size Phillips for the screw at hand. There are four common sizes of Phillips screw: 0, 1, 2, and 3 (rarely used). But you need one of each. There are smaller sizes too, but those are jeweler's screwdrivers.
In that same type of screwdriver there are also the Pozidrive and Drywall bit - both slightly different angled shapes. Many people mistakenly use a Phillips #2 on drywall screws and don't get full torque on them.
A Phillips screwdriver is a screwdriver for use with Phillips screws.
A Phillips screwdriver is a screwdriver for use with Phillips screws.
A phillips screwdriver is generally made of a steel shaft with a plastic handle
For #2 Phillips screws.
For a crosshead screw the "Phillips" screwdriver is used .
A Phillips head screwdriver has a crossed pattern head, rather than the straight edge of a flat head screwdriver
Phillips P4 is 3/8 diameter.
To tighten a stripped Phillips head screw, you will need a screwdriver with a slightly larger size than the stripped screw, such as a Phillips head screwdriver with a size one step up.
phillips screwdriver
The Phillips screwdriver was created by Henry F. Phillips (1890-1958) who was a U.S. businessman from Portland, Oregon . The Phillips-head ("crosshead") screw and screwdriver were both named after him .
Please explain "dsi"
It is a slightly better version of Phillips.