Let a b c d be part of the level moulding, which we will here suppose to be an ovolo, or quarter round; a and c. the points where the raking moulding takes its rise on the angle; f c g, the angle the raking moulding makes with the horizontal one. Draw c F at the given angle, and from a draw a e parallel to it; continue b a to h, and from c make c h perpendicular to a h. Divide c a into any number of equal parts, as 1, 2, 3, and draw lines parallel to H a, as 1 a, 2 b, 3 c; and then in any part of the raking moulding, as I, draw I k perpendicular to e a, and divide I k into the same number of equal parts H c is divided into ; and draw 1 a, 2 b, 8 c, parallel to E a. Then transfer the distances 1 a, 2 b, 3 c, and a curve drawn through these points will be the form of the curve required for the raking moulding.

We have here shown the method to be employed for an ovolo; but it is just the same for any other formed moulding, as a cavetto, semirecta, etc. It may be worthy remark, that, after the moulding is worked, and the mitre is cut in the mitre-box for the level moulding, the raking moulding must be cut, either by the means of a wedge formed to the required angle of the rake, or a box made to correspond to that angle: and if this be accurately done, the mitre will be true, and the moulding in all its members correspond to the level moulding. The plane in which the raking moulding is situated is square to that of the level one. This is always the case in a pediment, the mouldings of which correspond with the return.