[Fig. 3196] represents a cove cutter and [Fig. 3197] an ogee. [Fig. 3198], a double beading, and [Fig. 3199] a bevel cutter, and it is obvious that by a suitable arrangement and shape of groove cutting edges of any of the ordinary forms may be produced.
Fig. 3198. Fig. 3199.
The advantages of such cutters are that the plain bevelled face or facet of the cutter may be ground (to sharpen the cutter) on an ordinary emery wheel or grindstone, and the shape of the cutting edge will remain unaltered, providing that the cutter is always held to the grinding wheel or stone at the same angle, so that the length of the bevel remains the same.
A common practice is when making the cutter to so regulate the depth of the grooves or recesses in its face that the cutting edge will be of the required shape when the length of the bevelled facet is equal to three times the thickness of the cutter.
The method of finding the shape of cutter necessary to produce a given shape of moulding has been fully explained on [pages 80] to [85], Vol. II.
Various forms of side heads are shown in the figures from 3200, to 3207. [Fig. 3200] is a two-sided plain head, or in other words two diametrally opposite sides of the head are provided with bolt holes, for cutter fastening bolts. [Fig. 3201] represents a four-sided slotted head, each side having T grooves, so that the cutter may be adjusted endways on the head. This enables the use of four narrow cutters, thus taking the cut in detail as it were.
