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Yeah, I haven't used Torx, but the author listed 100 sizes as a feature, and I'd strongly disagree. I think Robinson having a small number of sizes makes it ext

Yeah, I haven't used Torx, but the author listed 100 sizes as a feature, and I'd strongly disagree. I think Robinson having a small number of sizes makes it extremely obvious when you're using the wrong one, and you can almost always tell the correct Robinson to use by sight alone. (the author lists 6 sizes, but in practice 100% of applications I've seen have used one of three)

alkonaut 4y ago
Not sure how many sizes of Torz there actually are, but I have only seen T10,15,20,25,30,35,40 which is 7 sizes. I think I saw a smaller one in a precision screwdriver set next to the other weird iPhone/watch ones like tiny pentalobes. But effectively Torx for all normal applications is one of 7 sizes, with T20 and T25 being probably 95% of all wood screws for building/carpentry applications. I wasn’t aware that there could even be a “T17” or “T31” - simply because no one would ever do it. Increments of 5 is already close enough to some times guess wrong.