If you haven't yet, it's time to buy a proper screw driver for your X-Metal frame. Please DON'T use the crap drivers that are included free, or that came in your kit of 100 bits for $10. They WILL damage your screws, and for a pair of glasses that cost a few hundred bucks an extra $5 is worth it!
When dealing with smaller head and socket sizes having the proper driver is even more critical! What makes a screw driver proper?
Two main types to consider are
- Precision cut tip - fits the pocket in the head of the screw better to avoid slipping and to transmit as much torque as possible. The Torx design allows more surface contact than a phillips or slotted screw, and more surface means more torque. Cheap drivers will not be a 100% fit and allow the driver to "skip" teeth or pop out of the screw's pocket. Both of these actions will strip out the head of the screw.
- Comfortable and easy to use. A grip that slips isn't good at all. It needs to be long enough to fill the length of your palm for proper grip using all of your fingers and to allow you to use your palm to set pressure into the screw to avoid slipping.
- Hard enough to not twist or deform when working. A cheap driver will be made too soft or too brittle and literally twist and deform on a stuck screw, or break/shear and leave you back at square 1.
A: A traditional screw driver. A fixed handle that will fit in your entire hand. Maximum grip and control.
B: A precision screw driver with a rotating cap. Usually these have a shorter and slimmer handle. The benefit to the rotating cap is that it allows you to anchor the butt of the driver in your palm or with your finger to apply constant pressure while continuously turning the driver. You don't need to reposition or let go to continue to drive the screw. The downside is the slim shaft is harder to grip strongly with more than one or two fingers and may not allow you to apply enough break-torque on a stuck screw. NOT GOOD FOR STUCK SCREWS
As reported by other members the brand used at Oakley HQ is Wiha. I highly recommend their SoftFinish and PicoFinish screw drivers for working on X-Metals.