[modeleng] Re: Piston rod glands

I was thinking of half-round deep hole drills for
 driling 'oles in gunbarrels.

 Al Messer


Al,

Gun drills are actually 3/4 round and pretty well have to be made of drill 
rod.  The beauty of a gun drill is that it seeks the centre of the rotating 
barrel and does not wander out the side as is possible with twist drills. 
They also drill a smooth and perfectly to size hole.

Jesse
> 

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