It only emphasizes the fact most clearly, that to do a good job the plane must be firmly held, that it must move along the board with the utmost precision, and that it should not be forced into the wood.
In smoothing down a board with the short smoothing plane, preparatory to sandpapering it, the better plan is to move the plane slightly across the grain. This will enable the bit to take hold better, and when the sandpaper is applied the course of the movement should be across the grain opposite the direction taken by the smoothing plane.
It is never satisfactory to draw the sandpaper directly along in the course of the grain. Such a habit will cause the sandpaper to fill up very rapidly, particularly with certain woods.
When gluing together joints or tenons, always wipe off the surplus glue with warm water taken from the glue pot. If you do not follow this advice the glue will gum up the tools and the sandpaper used to finish the work.
Never try to work from opposite sides of a piece of material. Have a work side and a work edge, and make all measurements therefrom. Mark each piece as you go along. Take a note mentally just how each piece is to be placed, and what must be done with it.
The carpenter, above all others, must be able to carry a mental picture of his product.
Never saw out the scribing or marking line, either in cutting or in ripping. The lines should be obliterated by the plane, when it is being finished, and not before.
Make it a habit to finish off the surfaces and edges true and smooth before the ends are cut, or the mortises or tenons are made. This is one of the most frequent mistakes. No job can be a perfect one unless your material has been worked down to proper dimensions.
Learn to saw across a board squarely. This may be a hard thing for the novice to do. A long, easy stroke of the saw will prevent it from running, unless too badly set or filed, and will also enable you to hold it more nearly square with the board.
If you find that you invariably saw "out of true," then take some sawing lessons for your own benefit, until you can judge whether the saw is held true or not.