This section is from the book "Cassell's Cyclopaedia Of Mechanics", by Paul N. Hasluck. Also available from Amazon: Cassell's Cyclopaedia Of Mechanics.
Fig. 1 shows a piece of circular moulding worked on the flat surface. First cut out the required shape or plan; get the piece equal in thickness and parallel in width. Sink squares as shown by dotted lines, taking out No. 1 square first, and so on; then, with a router, as shown in Figs. 2 and 3, work the mouldings from the outer edge. To work the rebate at 5 (Fig. 1), place the piece in the bench chops C (Fig. 2) and work in the same manner as shown for the small member on the inner edge. Fig. 3 shows how the moulding may be worked on the edge of a shelf bracket. The router can be bought at a toolshop, or made with a piece of hardwood and a piece of iVm. thick steel. B (Fig. 2) and A (Fig. 3) show the cutter. The fence C (Fig. 3) may be either of brass or iron slotted so as to be adjusted.

Working Circular Mouldings.
 
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