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Re: Union copper tube to 1/4-40 MTP ?

Posted: Thu May 10, 2018 8:42 pm
by 10 Wheeler Rob
Not just an internal ACME thread it is also left hand. First thing I ground a cutter for and machined after I purchased my 1927 9" South Bend. Made an aluminum practice one and then a brass one. Few months later a shop teacher friend gave me some when the school cleared out its metal shop.

Very time consuming to grind the single point cutter.