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You need to use the compound slide or the cross slide It can be of no Exclusive relevance below. Even so, if you truly indicate that you'll be flipping the lead screw feed course instead of just spinning the spindle in reverse even though trying to keep the half nut shut, I could easily see that you might not get back to the same groove.As we shift

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The helix angle is the angle concerning the thread’s helical route and a line perpendicular towards the screw's axis of rotation. Usually, a lead screw with a greater helix angle displays lessened frictional losses and therefore bigger efficiency.Furthermore, their load-bearing potential is fairly small because the locations at the crest and root

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