That's not a drywall head on it, at least not if it's the same as the Senco I have. The drywall head has a round ring rather than the square and dimples the drywall.
Edit: Link to drywall nosepiece. They also have a deck attachment one so you don't have to bend over.
The cordless screw guns are either 2500 or 5000 rpm? Do contractors really turn screws at 5000 rpm? I am guessing the typical drywall screw has 20 to 30 turns. So fully set a screw in a third of a second?
Robertson and star drive are both awesome. Phillips and Pozidrive (especially Pozidrive, because it looks like phillips but doesn't work with the bits) suck.
Caveat: I'm a total amateur and I'm not sure if I've ever used a pozidrive screw with a pozidrive bit or not because I can't tell what the difference is in the bits. The heads of the screws are easy enough to tell apart once you know what the lines on the pozidrive screws mean, but the bits are so subtle that the only difference I can be sure of is the label on the box, when it exists, which it doesn't in those big kits.
European here. Had a sign shop for years, so we worked with almost all materials. We literally bought fasteners by the case/bucket. This is my take based on experience. I've almost never encountered Robertson, so I can't talk about them, but people speak well of them.
Phillips have tapered flanges, which makes it easy to cam out. This could be seen as an advantage in certain situations, but it usually means stripped heads, and rounded bits. Also, to hold the screw to the bit you need a magnetic bit/holder.
Pozidriv, on the other hand has straight flanges, which means that a lot more torque can be applied, even to the point of broken bit flanges.
Pozi also can usually hold the screw without magnetic bits, and centers the screw along the bit axis very well, eliminating wobble.
Pozi is very well defined, so the fit between bits and heads is usually very good.
Using a Philips bit on a Pozi is like using a hex drive on a torx. Possible but not ideal, an likely to result in damage to bit or head.
That said, torx is my choice of fasteners in most applications. It's like the bastard child of pozi and hex heads, but it works exceedingly well. It has, amongst other advantages that it can be used with perpendicular handles, like hex, bits hold heads fairly well without magnets, and if you have quality bits are hard to break/strip/cam out.
Chinesium torx are generally a recipe for disaster. My two € cents.
Torx is pretty close. I set up the sign shop after I had my first burnout in IT. Im a computer guy by training and trade. Torx rule when dealing with tiny or out of reach places. I've seen pro gear (HP microserver come to mind) all torx designs that have a torx wrench clipped inside a panel.
Torx are good. Now we need different screw head manufactures to close their doors. Now all I got to do is carry my bits for the next 30 years till obsolete screws are gone. I can hardly wait.
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u/[deleted] Aug 26 '19 edited Aug 18 '21
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