The author says PH screwdrivers may be used on JIS screws, but in my experience they strip every single time.

This is incredible work, though.

Thanks for the kind words! The ifixit screwdrivers I linked are JIS compatible.

JIS screwdrivers are 100% necessary. It may seem PH fit at first, but it's _a tiny bit off_ enough to cause damage. The point of JIS is shorter and squared.