Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Should be titled "The Sherline book"

I don't think this is a very good investment for the average home machinist who has picked up a used South Bend or one of the Chinese lathes from Harbor Freight, Grizzly, Smithy or others. The book uses the micro-sized Sherline lathe and milling machine for all of its examples and illustrations, making it not all that useful for users of 'true' lathes and mills. It's not very information-dense compared to most instructional books I've read, and there are several pages wasted with pictures of steelmaking that are no value other than perhaps curiosity. This might be a good investment if you are a Sherline owner but it was essentially a waste of money for my particular learning needs. It's useful in the high-level informational sense, but don't expect to know how to actually make anything after reading it.