Description of π§ Enhance Precision and Durability with Grizzly T10438 Carbide Insert 3 Piece Set!
This 3-Piece Carbide Insert Boring Bar Set includes right hand indexable solid steel boring bars that use 1/4-Inch. Features negative 7Degree end and side cutting angle. Includes 5/16-Inch x 4-Inch, 3/8-Inch x 6-Inch and 1/2-Inch x 8-Inch boring bars. Set comes with Torx wrench and fitted aluminum case with handle.
When drilling 6160 aluminum I started small to open up the hole enough to use a medium sized bar. I had about 65mm of overhang, which is a bit too much. Even the slightest pressure would bend the thin rod. I felt like I could bend it with my fingers. As with the medium sized bar, I have to go through the hole twice as the bar will flex away from the aluminum even with a moderate overhang. When you come back out of the hole, you really notice that the cutter cuts a lot more when you pull it outβ¦