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Where my iT’s A fEaTuRe homeys at? (thelemmy.club)
submitted 2 months ago by to c/memes@lemmy.world
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SpoilerProbably at the hardware store picking up more Phillips head screws.

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[–] 13 points 2 months ago (8 children)

Don't feel bad, it's the PH design who's at fault. For some reason, someone decided PH should have tapered flanks, so that the bit has a constant tendency to slip out of the screw unless you push the bit into it with absurd amounts of force.

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  • [–] 7 points 2 months ago* (last edited 2 months ago) (2 children)
    1. They're not a great design
    2. Screws are made as cheaply as possible
    3. People assume their drivers last forever. Just a tiny bit of tip damage and they're grind up any screws.
    4. Philips in impact drivers is a sin.

    edit: 5. There are different Philips sizes; any Philips will fit in any equal or larger plus-sized hole, but barely engage and both strip the screw and the driver.

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  • [–] 2 points 2 months ago
    1. Philips in impact drivers is a sin.

    No doubt, but in my own amateurish experience, the only way I can deal with PH is by using a power tool at very low speed while also applying pressure on the screw to prevent slippage (ideally one that also lets you set the torque).

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  • [–] 3 points 2 months ago (2 children)

    The cam out is a feature not a bug for when these were invented. They were made well before we had electric torque control cheaply and easily, so assembly lines developed Phillips to control torque using the driver and fastener. It's literally designed to cam out on its own at a given torque setting.

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  • [–] 4 points 2 months ago* (1 child)

    AFAIK, this is a myth. The original patents don't include the tapering, and someone else in the comments quoted the relevant parts from Wikipedia.

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  • [–] 3 points 2 months ago

    Nevertheless, the tendency of the Phillips screw to cam out easily was later found to be advantageous when used with early power tools, which had relatively unreliable torque-limiting clutches. In this context, cam-out helped protect the screw, threads, and driving bit from damage caused by excessive torque.[4]: 85–86  A follow-up patent in 1942 further refining the Phillips screw design describes this feature and argues that if screw-driving clutches were perfect, a screw recess with zero vertical contact angles (and thus no axial cam-out force) could be utilized. However, it noted that such designs had proven unsatisfactory on assembly lines, as the driving bits would not disengage in time to prevent damage.[5

    Cam out source

    You're right it wasn't originally designed for it but later patents and iterations on the Phillips head driver specifically designed it in which is where I think the confusion comes from. I had always heard it was originally designed that way but I guess not.

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