1 Apr
2002
1 Apr
'02
12:42 p.m.
Anyone notice
how commodity PCs have screws that have clearly
been *cast* onstead of *turned/Machined*? Everytime you thread
one into a hole, you generate a nice supply of metal shavings.
Not good.
Just bad bag of that screws. Toss it and buy bag of decent screws. 
1 Apr
1 Apr
1:23 p.m.
"Douglas H. Quebbeman" wrote:
In fact, everytime you insert one of these, it has a
50%
chance of rethreading the hole.
Look at them carefully... they have a noticable taper.
That's *one* way to encourage them to stay put.
The real crime is the quality of duct tape is going down. :)
Mind you with most of the new PC's you really don't have much new in
accessory cards. Most I/O is now USB and video/Hard disks/CD-rom are all
internal now.
--
Ben Franchuk - Dawn * 12/24 bit cpu *
www.jetnet.ab.ca/users/bfranchuk/index.html
2:24 p.m.
I've been building PCs since XTs came out, and I cannot think of a single
time that I've reamed out a screw, with the exception of one of those very
fine pitch thread screws the CDROM manufacturers seem to like. If you're
re-threading the hole everytime, perhaps you should take it a little easier
on the poor PC case :-)
I do have one theory that applies to PCs and cars: If you fail to shed
blood and appease the gods, it will not work when you're done.
--John
I should have been more specific... the screws to
which I am
referring are those commonly provided for securing the cards
in their slots. And they shed metal not only from the screw
but from the rear of the chassis they thread into.
In fact, everytime you insert one of these, it has a 50%
chance of rethreading the hole.
Look at them carefully... they have a noticable taper.
That's *one* way to encourage them to stay put.
-dq
10:03 a.m.
I've been building PCs since XTs came out, and I
cannot think of a single
time that I've reamed out a screw, with the exception of one of those very
fine pitch thread screws the CDROM manufacturers seem to like. If you're
re-threading the hole everytime, perhaps you should take it a little easier
on the poor PC case :-)
I have not stripped the M3 (fine kind) ever yet. I did strip the
coarse thread hole out in crap paper-metal cases once in awhile.
Always discard the eaten-up philips heads or thread is stripped when
I find them. Keep your philips number 2 screwdriver fresh by
replacing now when screwdriver starts to cam out, that is how damages
the screw-heads by worn tools.
I'm not talking about sex thing! With that in mind:
Cross threading happens when screw got cocked and kept screwing in.
Cocking happens also if the screwdriver is worn or too loose
(screwdriver #1 with #2 screw. Ditto to wrong fine screw in coarse
holes or vice vesa. All of this I find always give lot of resistance
if started wrong. If that ever happens STOP! and back off and keep
going, keeping that screw straight while spinning counterclockwise
(CCW) till I feel or CLICK! STOP. Now you're ready to spin
counterwise CW safely and easily.
CDROM and floppy, most others stuff use M3. HDs almost always are
corase type but has to be 2mm long max and quality kind. Except
bigfoots these ex-Quantum 5.25 bigfoots they use fine screw (M3).
Weird.
I do have one theory that applies to PCs and cars:
If you fail to shed
blood and appease the gods, it will not work when you're done.
Hehehe... :-) Now no longer required. Simple pay bit more for
quality and above average or excellent compatiblity and that will
work every time.
Cheers,
Wizard
3:35 p.m.
On Mon, 1 Apr 2002, John Chris Wren wrote:
I do have one theory that applies to PCs and cars:
If you fail to shed
blood and appease the gods, it will not work when you're done.
Absolutely. Although Sridhar and I have discussed the possibility of
offering up chicken blood instead....
Doc
2 Apr
2 Apr
8:40 a.m.
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11:10 a.m.
On Tue, 2 Apr 2002, Tony Duell wrote:
Sheesh! I should have read one more message!
- don
I've been building PCs since XTs came out, and I cannot think of a single
time that I've reamed out a screw, with the exception of one of those very
fine pitch thread screws the CDROM manufacturers seem to like. If you're
re-threading the hole everytime, perhaps you should take it a little easier
on the poor PC case :-)
I've found it often helps to turn the screw 'backwards'
(counterclockwise) until you feel the threads click into place, then
tighten it.
In the case of self-tapping screws it generally pervents the screw from
starting a new thread (which, if done enough times means there's no metal
left). In the case of large-diameter fine pitch threads (like lens
retaining rings in cameras, OK, off-topic, but I can't think of such a
thread in a computer), it helps prevent cross-threading.
I assumed this trick was well-known, but perhaps not.
-tony
8302
days inactive
8303
days old
6 comments
7 participants
participants (7)
-
ard＠p850ug1.demon.co.uk -
bfranchuk＠jetnet.ab.ca -
doc＠mdrconsult.com -
donm＠cts.com -
dquebbeman＠acm.org -
jcwren＠jcwren.com -
jpero＠sympatico.ca