. How to make and use match plates .. . FIG. finished A round snap flask which is removed from the mould in the same manner as a jacket. A-I. dovetail job a few years ago, and I sincere-ly believe that I have saved many dollars inpattern labor by using this method. Havethe wood pattern made in the usual way,with the loose piece dovetailed in the loose piece in brass, and fit thisbrass piece to the wood pattern. It mayrequire shimming up, as the shrinkage incasting may make it loose if it is very ram the pattern up with the brasspieces in place. After drawin
. How to make and use match plates .. . FIG. finished A round snap flask which is removed from the mould in the same manner as a jacket. A-I. dovetail job a few years ago, and I sincere-ly believe that I have saved many dollars inpattern labor by using this method. Havethe wood pattern made in the usual way,with the loose piece dovetailed in the loose piece in brass, and fit thisbrass piece to the wood pattern. It mayrequire shimming up, as the shrinkage incasting may make it loose if it is very ram the pattern up with the brasspieces in place. After drawing the woodpattern, remove the shimming and be care-ful not to disturb the brass pieces as theyare to remain in the mould. Pour the cast-ing and when cool, knock the brass piecesout and you will have a perfect fitting dove-tail. The loose pieces should be brass, forif made in aluminum they may fuse to thecasting, which would make it impossibleto remove them. SNAP FLASKS The old type of straight snap flask isbeing rapidly replaced by the tapered snapflask. It is amaz
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Keywords: ., bookcentury1900, bookdecade1910, bookidhowtomakeuse, bookyear1915
