There is considerable lost motion in the adjusting nut, and the set-screw, which acts as a knob, is likely to work loose and be lost.

It is hardly to be recommended as a part of the equipment of the individual bench in school shops.
The piece to be planed with the block-plane may be held either in the vise, end up, or on a bench-hook, Fig.109.In end planing in the vise, in order to avoid splintering the precaution should be taken to trim off a corner on the undressed edge, as directed on page 73, or else the planing must be done from both edges toward the center.

The sliding cut is much easier than the straight cut, and hence there is a constant temptation to turn the plane at an angle perhaps at an expense of the flat surface desired.
[Illustration: Fig.109.Using the Block-Plane and Bench-Hook.] In using the bench-hook the piece to be block-planed is placed with the working edge against the block, with the end to be planed to the right and flush with the edge of the bench-hook, in which position it is held with the left hand.

The block-plane, held in the right hand, is placed on its side on the bench facing toward the work.

In planing, the left hand holds the work firmly against the block of the bench-hook, pressing it somewhat to the right against the plane.