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List of screw drives

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Re: List of screw drives

#161

Earlier quoted context omitted.

Reminds me of the slight difference between Phillips head and JIS (Japanese Industrial Standard) drivers.

Yes, very important when working on decades old Japanese motorcycles. Hozan make some nice sets if anybody is looking.

And Japanese cameras.

Re: List of screw drives

#163

Earlier quoted context omitted.

If I was in charge of these things, I would enact a 'Fahrenheit 451'-style policy, except for Flathead screws instead of books. Any of the other myriad style of screws is preferable to those ancient fasteners.

Agreed. There are two things that I feel should be destroyed and replaced on sight for the betterment of humanity: flat head screws/drivers, and network hubs. It would probably even cause a measurable increase in lifespan due to removal of a significant stress source. But I can dream...

I see your point, but if the remaining problem to solve in our civilisation is what type of screw heads then we're doing pretty good :)

Re: List of screw drives

#164

When my wife and I bought our house, I thought the previous owner had stripped the hell out of some Phillips screws... then I learned what Robertson (square) screws were. After getting the proper bit though, I’ve started to really appreciate them. I don’t think I’ve ever stripped a single one.

Robertson is excellent but they seem to be a uniquely Canadian phenomenon. My company ships robots to the US in big crates, and we've had to switch to building them with Philips screws instead because of issues with local availability.

Re: List of screw drives

#165
It's all about force and material properties. The drive type doesn't matter as long as it can handle the force it will see. If the tool and the fastener fit well the limitation is usually whatever has the smallest minor diameter.

Re: List of screw drives

#166

Earlier quoted context omitted.

Phillips screws are design to have the driver leave the socket if it is over-torqued. Frequently people keep going after this has occurred which results in stripped heads, but if you listen to what the tool is trying to tell you then it shouldn't happen.

>if you listen to what the tool is trying to tell you then it shouldn't happen. The problem is when the tool is telling you the screw is tight enough but it's only halfway in. Or hasn't come out yet. That's where the stripping happens.

There's a whole set of skills needed. If it's only half way in when it cams out, then you need a bigger pilot hole. If you're screwing into wood, another useful tip is to dip the screws in vaseline (petroleum jelly) first.

If you're getting stuck removing the screw, wait 6 months for the humidity profile to change and the wood to open up.

I'm being slightly factious and I share your pain. The vaseline tip is real though.

Re: List of screw drives

#167

When my wife and I bought our house, I thought the previous owner had stripped the hell out of some Phillips screws... then I learned what Robertson (square) screws were. After getting the proper bit though, I’ve started to really appreciate them. I don’t think I’ve ever stripped a single one.

Robertson is excellent but they seem to be a uniquely Canadian phenomenon. My company ships robots to the US in big crates, and we've had to switch to building them with Philips screws instead because of issues with local availability.

I'm in Ohio, but I guess that's close to Canada. The bit was pretty easy to find in the first hardware store I tried.

Re: List of screw drives

#168

Earlier quoted context omitted.

Yes, I also quickly developed some skill with a utility knife, getting the paint out and creating space for the screwdriver head, but I never found a good way to prevent the screwdriver from sliding sideways. Especially with large screws that require a lot of force to remove.

Heat and then a crack with a hammer have been my method. Always using the absolute tightest getting screw driver. I still snap the screw maybe 1 time in 5 due to the torque I can get on it. I’m repairing rusted out 1940s window hinges, and it’s truest awful. Have got about 100-150 to go, but I’ve done maybe 300.

I use a cheap chisel the same width as flathead screw, thoroughly clean out the slot with it and use as a screwdriver with very heavy pressure as I turn. This was for very old (circa 1900) screws in old growth wood.

Re: List of screw drives

#169
post #73

As far as I'm concerned, torx is the only reasonable screw anymore. It seems like most construction screws (at least in the US) have moved to this. Just to make the point: I've stripped out more torx drivers than I have torx heads. I can say I truly don't understand how phillips ever even took hold over flatheads. Cheap phillips head screws seem designed to strip out. Somebody elsewhere in this thread made the point…

If by flat head you mean “-“ shape then the main reason is that if you don’t have the drill bit centre plain in the exact same plain as the screws then it’s a nightmare to remove. For metal of pre threaded holes this isn’t an issue but drilling into wood where even with a pilot hole you can be a few degrees of perpendicular to the surface flat heads are significantly slower to work with.

Re: List of screw drives

#170

When my wife and I bought our house, I thought the previous owner had stripped the hell out of some Phillips screws... then I learned what Robertson (square) screws were. After getting the proper bit though, I’ve started to really appreciate them. I don’t think I’ve ever stripped a single one.

It should be noted that Robertson screwdriver holds a screw in without the use of magnets. It makes things so much easier and is by far my favorite type.
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