[Boatanchors] CCW drill bits

[Walt Heilsnis - WB2VSJ]

I use PB Blaster all the time. Saved my bacon lots of times.

It is terrific stuff but they warn you to be careful around plastics, rubber, etc  If you do apply it, put some in a bottle cap or something and then use a toothpick to apply.  Otherwise it goes all over hecks-half acre.

Here's another thought - if you are still having issues, see if you can find a watch/clock repairman in your area (I know, it's a dying skill). They should have the proper tools to extract that set screw.



Walt
WB2VSJ


-----Original Message-----
>From: David Knepper <collinsradio at comcast.net>
>Sent: Dec 15, 2010 7:34 AM
>To: John King <k5pgw at yahoo.com>, boatanchors at mailman.qth.net
>Subject: Re: [Boatanchors] CCW drill bits
>
>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
>Join today
>----- 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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