. Model engine construction, with practical instructions to artificers and amateurs. The slide-rest is a very expensive addition toa lathe (costing fully £3 for a 3^- centre lathe),and we will dispense with it for our work; witha little practice it can readily be done without. 12 MODEL ENGINE CONSTRUCTION. A face-plate (Fig. 8) is a very useful adjunct tothe lathe (costs 10s. to ). It is an iron disc,planed quite flat on one side, and screws on to themandrel by the other. Slots radiate outwards fromthe centre; through these screws or clamps lathedogs, as they are called, pass, and by them
. Model engine construction, with practical instructions to artificers and amateurs. The slide-rest is a very expensive addition toa lathe (costing fully £3 for a 3^- centre lathe),and we will dispense with it for our work; witha little practice it can readily be done without. 12 MODEL ENGINE CONSTRUCTION. A face-plate (Fig. 8) is a very useful adjunct tothe lathe (costs 10s. to ). It is an iron disc,planed quite flat on one side, and screws on to themandrel by the other. Slots radiate outwards fromthe centre; through these screws or clamps lathedogs, as they are called, pass, and by them workis clamped to the face-plate, and properly centredin the lathe. The face-plate revolves and carries. Fig. 8. the work round with it, which should be so placedas to turn in line with the lathe-centres. Removethe steel point from the movable head, insert a suit-able sized drill. Feed the drill forwards, by graduallypushing it up against the work by turning the hand-wheel, and it will soon cut its way through, if keptfrom revolving. This is done by clamping to thedrill-stem, at right angles, a small iron bar, forked,or with a ring at one end, through which the drill TOOLS USED IN MODEL ENGINE-MAKING. 13 passes; there is a set-screw for tightening up. Thebar rests by its opposite end on the top of theT-rest, along which it slides with the drill. In thismethod, the work revolves and the drill is station-ary, which gives the best results, but it is a littledifficult to chuck the work properly at first. Workmust always be first correctly centred, and thencentre-punched, before attempting to chuck it in alathe. A rose-cutter is useful for finishing a boring out the cylinder, w
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectmachinery, bookyear18
