maundril

— The cutting maundrils taper directly from the centre to the points, the holing maundrils are somewhat stronger and bluffer.

— They must be fitted with lined or double hoops, drawn on maundrils to fit quite tight; the bottom pieces being bored at the joint, and a peg left at the end of the part above to fill it up, so that when put together, all the wood being there, the joint will be as firm as any part of the rod: besides, the wood cannot swell when wet, and can easily be taken to pieces.

— The whole cylinder is then placed in the furnace, and brought to a proper welding heat; it is next passed through a series of grooved rollers, the grooves of which are furnished with a maundril, or an egg form, attached to, and supported on, the end of a fixed bar, firmly secured at the opposite end, to resist the end pressure or strain during the process of rolling. The maundrils are made of cast-iron, chilled, and are socketted on the end of the bar, and secured by a screw-nut, so that they may be easily removed, when required.