Thats luck Steve:
I would sometimes rather be lucky than good!
Not sure who suggested it, but they never tried drilling a hardened set
screw out of a plastic housing. Not much chance of that happening in a
normal home shop---even a toolmaker would cringe at trying that.
Oh OH Oh....here's a way to get stripped screws out: COnnect the ground
lead of your welder to the shaft. Connect the hot welder lead to a pc
of good steel stock and shove it down the whole so it welds itself to
the screw. Now use the welded on "extension" to remove the screw.
Not sure I would try it on a museum quality radio, but hey, mine don't
all look that great anyway! ;)
with tongue planted firmly against cheek...
Curt
KU8L
Steve Wedge wrote:
We have a winner!
I could not get that screw to back out with PB Blaster, WD40, heat
from the hair dryer, or freeze spray. I noticed the knob wasn't on
overly tight (a good thing this time). I wiggled it and it loosened
up a little, then held (gently) the shaft inside the frame (just
inside of the ball bearings) with a stout needle-nosed pliers and
turned whilst pulling. It came off!
The screw was stripped in the CCW direction. I hit it with a little
more PB Blaster, then heat-soaked it in a 250* oven for half an hour.
Still no CCW, so turned it CW until it wouldn't go any further (the
screw was so long, it hit the other side of the hole! With a little
more PB, I coaxed it back in and got it out finally. Had some more
setscrews in my hardware cabinet, so I'm all set with this one!
Thanks to all for the suggestions. I was lucky to be able to twist
the knob off so that I could turn the screw further in.
73,
Steve Wedge, W1ES/4
"I can't complain, but sometimes I still do."
- Joe Walsh
If the above message appears, it came from Steve's Son of Laptop!
----- Original Message -----
*From:* Chuck Grandgent <mailto:ch...@chuckg.com>
*To:* Steve Wedge <mailto:w1es1...@earthlink.net>
*Sent:* Tuesday, September 06, 2011 9:22 PM
*Subject:* Re: [Drakelist] Stuck screw in PTO knob.
Hi Steve,
WD-40 is not really a lubricant, it is a "water dispersal" (hence
the "WD" in the name) mixture, though it has some lubricant
properties. I have made that mistake myself, for example trying
to use it to lubricate the hinges on the doors in the house, where
3-in-1 oil was clearly the better choice.
I dunno what would be the recommended thing for your predicament,
but I'm sure folk will chime in.
For loosening up stuff on the 1950's tractors I got, "PB Blaster"
is the chosen stuff, though it might be totally inappropriate
here. Actually, another thing does come to mind... I rotate my
own truck tires, and when the shop tightened them too much, Marvel
Mystery Oil really did the trick, let it sit a few hours.
Good luck,
Chuck, K1OM
On Tue, Sep 6, 2011 at 9:06 PM, Steve Wedge
<w1es1...@earthlink.net <mailto:w1es1...@earthlink.net>> wrote:
I've put a couple of drops of WD-40 down the hole after
bending one screwdriver trying to get the setscrew backed out.
Has anyone used anything else to free a stuck screw? I'm now
wondering if the WD-40 might not swell the plastic,
exacerbating the problem...
73,
Steve Wedge, W1ES/4
To be is to do - Socrates
To do is to be - Plato
Do be do be do. - Sinatra
All my computers have my signature with various pearls of
wisdom appended thereto.
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