[Hallicrafters] Damaged Set Screws

[GARDGORE at aol.com]

In a message dated 2/9/2004 9:57:43 PM Eastern Standard Time, 
kiyoinc at attglobal.net writes:

> Upon closer inspection, it is definitely a spline setscrew but probably
> banged up.  I haven't looked at it using magnification. 
> 
> Anyone know how to "touch up" a spline set screw? 
> 

It is important to closely examine set screws on all Hallicrafters knobs 
before attempting to remove them. Usually Hallicrafters have "Bristol" type 
splined set screws in the knobs but occasionally you will find some "Allen" types 
mixed in. For those who are unaware about Bristols there is an Allen wrench that 
will go in but it will damage the splined type drive if you exert any force. 
I have encountered Bristol set screws that were damaged internally by previous 
owners to the point where the proper Bristol tool will no longer fit. When 
this is the case I use a Bristol wrench that has been ground flat on the end so 
that the edges are sharp. Usually this can be tapped and wiggled in until it 
somewhat restores the spline shape enough that the screw can be removed. New 
Bristol screws are available from McMaster-Carr.

Regards, Greg


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