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- Jan 26, 2015
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Tramming the table top does not necessarily mean that you will not get a ridge when moving during milling. If the table top and the ways are not parallel you will get a ridge when moving because the table will actually rise or lower depending on the direction moved. So if you tram your head and still can't get things milled without a ridge or step that is probably the cause. This happens more so on used or rebuilt machines when worn or rebuilt improperly.