H.
Hollows.—In forming hollows in mouldings, &c., if large, proceed as described under the head of Arch; if small, first cut by means of the “adjusting straight-edge,” an angle, thus, V; and then with a curved ivory tool give it the required concavity by pressure along the whole length of the previously cut angle.
Hood Mould.—These may be cut with the “knife-compass,” and the mouldings worked by fitting a piece of ivory filed to the required form in lieu of the knife; they must be slightly gummed upon the underside to the cutting-board, to keep them steady while being worked.