The cutting of the hub is not a very difficult matter if you have a fret saw.
These can be cut out from the lid by means of a fret saw, and then smoothed down with glass-paper.
Now, using your fret saw, cut out these holes very neatly and precisely.
This is then by means of a fret saw cut into a great many pieces, shaped as quaintly and awkwardly as possible (see Fig. 55).
These holes must then be cut out by means of a fret saw, or, if you do not possess one, by means of saw and chisel.
If you have a fret saw, and can use it cleverly, you can make at home as good a puzzle as any that can be bought.
The whole is then fixed in a piece of light copper tube, which is slotted by means of a hack saw or fret saw to receive them.
The wheels should be cut with a fret saw, if you possess one.