The largest end of the taper is generally nearest the tool post.
The top of the cross slide is cylindrical, and is bored to receive the tool post which has a cylindrical stem.
A simple lever, fulcrumed on a bar held by the tool post, is drilled and tapped in the end to receive the screw.
The surface e at the top of the tool post slot is curved so that it will bear upon the top of the tool at a point only.
Fig. 614 is the tool post used at the back of the rest, the piece b passing through the tool post slot.
In some lathes there are special fixtures for emery grinding, while in others an attachment to go in the tool post is used.
This enables the tool post to be moved from side to side of the tool rest, and swing around in any required position.
A bar of this kind is more rigid than a tool held in the tool post.