A few pics showing the type of tool holder and inserts I use for single point threading on my lathe.
The same as the one used here . http://www.metalworkingfun.com/showthrea...94#pid2794
A view of the business end
Both the same holder, the silver coloured one is just newer, and has the threading insert, the black one (on its side) has a small profiling insert or more specifically a rounded end grooving insert
To the right another threading insert and a grooving insert (straight ended)
Shows how the tool angles the inserts to achieve the correct cutting angles
The threading inserts are either 60 deg or 55 deg. Shown by MT=60deg; WT=55deg.
The insert at the bottom in the above photo is chipped. What happens if you allow the work piece to turn backwards.
Some more photos.
All the inserts are interchangeable, some different sizes makes it quite a versatile tool holder.
DaveH
The same as the one used here . http://www.metalworkingfun.com/showthrea...94#pid2794
A view of the business end
Both the same holder, the silver coloured one is just newer, and has the threading insert, the black one (on its side) has a small profiling insert or more specifically a rounded end grooving insert
To the right another threading insert and a grooving insert (straight ended)
Shows how the tool angles the inserts to achieve the correct cutting angles
The threading inserts are either 60 deg or 55 deg. Shown by MT=60deg; WT=55deg.
The insert at the bottom in the above photo is chipped. What happens if you allow the work piece to turn backwards.
Some more photos.
All the inserts are interchangeable, some different sizes makes it quite a versatile tool holder.
DaveH