Line boring

=== headstock boring ===
https://www.youtube.com/watch?v=zbeeMu4b9Hw In line boring and overlay welding on a blind hole, this technique is used to line bore a Lathe head stock. 
https://www.youtube.com/watch?v=JyS26b-w4ic
https://www.youtube.com/watch?v=qfsUY6UVVgI
https://www.youtube.com/watch?v=3PvbCS8yJS4 aligning boring shaft
=== links ===
Lathe bearing design
Category:Lathe