Match-board
Same as match-plate, except that it is made of wood instead of metal. See MATCH-PLATE; MATCH-PART.
Match-part, sometimes called a "sand odd-part" by the moulder. This is a device for economizing time in making partings when a large number of castings are required to be made in the same kind of flasks. One method of procedure is as follows: Procure a well-made "roll-over" board, and arrange the pattern or patterns suitably for gating, etc., and wherever portions of the pattern must of necessity project upwards into the cope, set them just in that position on the board by cutting out the wood at the points of projection, taking care that the parts of the board adjacent to the patterns shall leave the parting all ready made around them when the nowel has been rammed and rolled over. Another ready way of accomplishing this is to extemporize a match-part by forming the same in sand, hard rammed into an odd flask of equal dimensions with the ones to be used; this may be coated with tar and dried, and will be found very serviceable. A decided improvement on the last may be obtained by first making the parting in the usual manner and covering the same with oil, and a good sprinkling of parting-sand; after which set thereon a wood frame (no deeper than is absolutely necessary), having a bottom nailed on, with a few nails driven here and there clear of the parting. A hole in the centre will permit the space to be filled with plaster, which, running all over the surface and around the nails, will, when set, be found a perfect impression of the joint required. The nails will prevent it from dropping out. See MATCH-PLATE; ROLL-OVER BOARD.