"James Wilkinson Sword" wrote in message
news
On Mon, 22 May 2017 19:49:21 +0100, newshound
wrote:

On 5/22/2017 6:14 PM, James Wilkinson Sword wrote:
On Mon, 22 May 2017 17:47:34 +0100, harry
wrote:

On Monday, 22 May 2017 15:40:59 UTC+1, James Wilkinson Sword wrote:
Are screwnails still used? What advantage do they have over screws?

The advantage is you can hammer them in

You can hammer screws in. I know somebody who does that quite
successfully.

Oh, an idiot

He'd only be an idiot if it failed. They go in fine with a hammer, and
they screw back out. Screws are basically screwnails, plus the ability to
remove them with a screwdriver.

and they won't easily pull out. Cheaper

Why would they be cheaper when the only difference is the presence of a
pozidrive head?

That's quite a big difference.

Surely they're all made in a mould.

Nope, they are stamped, not moulded.

Same price once you've made the mould.

Nope, its more difficult to have a pozidrive head.

Also, they tend to be mild steel, like
(ordinary) nails whereas proper screws are carbon steel and quite a bit
stronger.

So something you bash in with a hammer doesn't need to be so strong?!

Need to be done differently.

Anyway, since screws and nails are a tiny tiny proportion of the cost of
building something, there's no point in scrimping on them.

Depends on how many of them are used.