With wooden cutting boards, you have two basic choices, end grain or edge grain.
Since the block-plane is intended chiefly for use on end grain, no cap is needed to break the shavings.
The chuck is made of any soft wood and should be cut in the end grain, which will insure equal pressure on all sides.
This tool while very serviceable for cross grain is especially advantageous for the end grain of the wood.
It is well to remember in gluing mitre joints that end grain absorbs more glue than a flat surface.
The end grain is usually protected by nailing on a strip of timber, chamfered on both edges.
They are easily sharpened with a stone, work quickly and leave a smooth hole, but do not cut so well in end grain.
A piece of hard wood is shaped on the end grain to fit the depression made in the lead.
They are useful in boring into end grain, and in boring part way into wood so thin that a spur would pierce thru.
Where both hands are free to hold the plane, the block-plane has no advantage over a smooth-plane, even on end grain.