Description
These Ball Mills are designed specifically for routing out enclosed tracks on timber speagun barrels. Available in various sizes to suit all shaft thicknesses.
Features:
- Essential tool for cutting grooves for an enclosed track
- Oversized by .02″ to allow for shaft clearance
- Hardened steel for smooth precise cuts
- Designed for making custom spearguns
Tip:
First, take as much of the material to be removed out with a straight end mill, the size of the neck of the ball cutter. Go slow with the straight cutter and make several passes. Then, with the ball mill, go down and back once. Turn the mill off and re-position with the ball cutter still in, and re-start the mill. Go back a few inches further than the start of the cut so you can start the travel, then start the mill.
This will give you a smoother transition between the cuts, and cutting both ways will give you a smoother track.
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