Re: Primary Supports - Ball Cutter Question

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Original poster: "Dr. Resonance" <resonance-at-jvlnet-dot-com> 


Outside dia. of ball cutter matches that of the OD of the copper tubing.  I
use a 1/2 inch ball cutter with 3/8 ID (1/2 inch OD) copper tubing.  Ball
cutter sizes usually are 1/4, 5/16, 3/8, 1/2, 5/8, and 3/4 most popular
sizes from J&L Industrial.

Dr. Resonance

 >
 > "J & L Industrial Supply in Chicago carries them.
 >
 > Tel 800-521-9520
 >
 > We use these ball cutters and usually cut our grooves approx 80% x dia.
 > of
 > copper tubing.  They snap in clean at this depth.
 >
 > Dr. Resonance"
 >
 > If the depth is 80% of the ball diameter that would mean the surface
 > slot was smaller than the size of the "tunnel" formed from the cut,
 > making the maching a wee bit difficult.  Do you mean that you use a ball
 > diameter larger than that of the tubing, or if not, how do you go about
 > it?
 >
 > Ed
 >
 >
 >