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Sequence of machining - Stuart Twin Oscillator

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JasonB	23/04/2016 10:17:42
25215 forum posts 3105 photos 1 articles	Off to a good start. One thing to watch with that type of vice is that the moving jaw can lift as you tighten the vice which will throw the top of the work forward so make sure you tap it back against the packers as you tighten.
Rod Neep	23/04/2016 10:22:42
59 forum posts	Yup... did that too. And checked again with an indicator to be sure.
mechman48	23/04/2016 12:07:58
2947 forum posts 468 photos	If your base has been machined equally on all sides might I suggest you put a stop, clamped to the vice jaw, against one of the base sides then you can turn the casting 180* & butt the base against the stop & be on the same centre line plane to drill the crankshaft bearing from the other side. George.
Rod Neep	23/04/2016 12:33:52
59 forum posts	Good idea..... if I had thought of it at the time. But I just skimmed the surfaces of the 4 sides of the base. Its a good thought for future similar operations though and it has been filed in my memory bank. Rod
Chris Gunn	23/04/2016 17:49:35
459 forum posts 28 photos	I think you are making the job more complicated than it need be by drilling the crankshaft hole from both sides, the chances are it will not line up so why take the risk? See my earlier post about the drilling procedure I would adopt. Chris Gunn

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