[Boatanchors] CCW drill bits

[David Knepper]

Before you do anything as some have advised on this list, which I consider 
rather drastic measures, I would apply a shot of pb blaster penetrating 
catalyst  Let it soak overnight and then try to remove the screw.  DO NOT 
stick any kind of glue or expoxy down the hole as that is asking for 
trouble.

I am surprised that others have not suggested PB Blaster.  Great stuff to 
have around the shop.
No guarantee but it is worth a try - I have tried it with good success.

Good luck.  Put away the drill and bits!

David Knepper, W3CRA/W3ST
Editor of the Collins Journal
Secretary of the Collins Radio Association
www.collinsra.com
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----- Original Message ----- 
From: "John King" <k5pgw at yahoo.com>
To: <boatanchors at mailman.qth.net>
Sent: Tuesday, December 14, 2010 10:24 PM
Subject: [Boatanchors] CCW drill bits


>I have a spinner knob for a Collins 75A4 that has a set screw in it that 
>has
> been "boogered" up by a former owner so that the slot/hole in the top of 
> the set
> screw will not accomodate a hex or bristol tool. The knob is off the shaft 
> so
> the screw should not be "tight" but just in the screw hole and should be 
> easily
> backed out if there was some way to put pressure on it in the reverse or 
> CCW
> direction.
>
> That is why I was inquiring about SMALL CCW drill bits.......thinking a 
> CCW bit
> might set inside the screw head and catch enough to move the set screw 
> out.
>
> Another method, I have been thinking about, is to put a dab of fast drying 
> epoxy
> on the end of a small allen wrench and sticking it into he wallowed out 
> set
> screw head and allowing the expoxy to dry and then turn it CCW. The 
> drawback is
> that it would be difficult to keep from getting the epoxy in the screw 
> hold in
> the brass insert thereby clogging up the hole.
>
> Just thinking out loud in an attempt to determine the best way to back the 
> set
> screw out of the knob. Thanks for the replies. 73, John, K5PGW
>
>
>
>
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