"Fredxx" wrote in message
...
On 19/02/2019 22:56:55, Rod Speed wrote:
On 2019-02-19 3:23 p.m., Rod Speed wrote:


"Fredxx" wrote in message
...
On 19/02/2019 21:52:41, Rod Speed wrote:


"Fredxx" wrote in message
...
On 19/02/2019 20:21:02, Rod Speed wrote:


"Commander Kinsey" wrote in message
news On Tue, 19 Feb 2019 17:02:54 -0000, Clare Snyder
wrote:

On Tue, 19 Feb 2019 00:15:18 -0500, wrote:

On Mon, 18 Feb 2019 22:46:25 -0500, Clare Snyder

wrote:

On Mon, 18 Feb 2019 19:08:44 -0700, rbowman
wrote:

On 02/18/2019 08:38 AM, Commander Kinsey wrote:
They shouldn't call them self tapping because they rarely do
unless the
wood is very soft indeed. Usually the force to create the
hole wears
off the er.... the bit the screwdriver goes into. I almost
always use a
pilot drill first, unless I'm in a hurry, then I curse the
bloody screws
when they burr.

Using the correct size of a quality screwdriver helps. What is
the UK
equivalent of Harbor Freight?
"Self drilling" is the term, and if they aren't Chinese junk
they are
usually good for 16 guage steel - perhaps 14. Useless foir
anything
heavier. Chiners junk is good for about 18 guage aluminum on a
good
day.

Actually there are at least four types of screw that cut their
own
thread.
You have the self drilling that is a sheet metal screw with a
drill
bit tip on the end that actually drills the pilot hole (Commonly
called Tek screws)
Then there is the self tapping sheet metal screw that just has a
point
on the end and gnaws it's way in
The third is a "swage form" machine screw that goes into a pilot
hole
and the tip is threaded all the way to the end with a slight
taper and
a triangular shape until it gets to the body of the thread. It
actually swages threads
The 4th is a self tapping machine screw that has a tapered thread
and
slits cut in it to take away the waste material just like a tap.
I have some of each type if anyone wants pictures.
From the complaint I had pretty much ruled out the common sheet
metal screw with the sharp split tip and the swage form -
basically
narrowing it down to the "tek" - but then he complained about it
only
working if the "wood" was soft - - - -

I really think he needs to limit himself to socket head (allen)
or
hex head screws - and eventhen he needs to use the correct size
driver.

PZ2 is easier to use. I'm just saying they shouldn't be sold as
"self tapping" if they really need a pilot hole.

They are called self tappers because they tap the hole.

They arent called self drillers, stupid.

Perhaps Australia is behind the times:

https://en.wikipedia.org/wiki/Self-t...drilling_screw

Just you being a ****wit, as always. That's just ONE TYPE of self
tapper, ****wit.

Its one kind of self tapper called a self driller.

But is just one type of self tapper, ****wit. Most self tappers arent
self drillers.

https://www.firstcallautosupply.com/...apping-screws/

Or is it just you being stupid?

Nope, you being a ****wit, as always.

You're too thick to see you're stupid.

You never could bull**** your way out of a wet paper bag.

you are a paper bag

Are you calling yourself a paper bag? What next?

You never could bull**** your way out of a wet paper bag.