Harry, I have intended to purchase one from ENCO for several years, but never gotaroundtuit. They are actually quite reasonably priced in those smaller sizes and ENCO can have one in your hands in about two days. Of course it will probably be made by our Asian "friends" and yet, miracle of all miracles, I ordered some #4-40 taps and a "T" type tap handle this past week and both items were USA made. Sorry I don't have a 1/2" Acme or you could certainly borrow it. Acme? Isn't that the same firm that supplies all of Wylie Coyote's Roadrunner catching equipment? Jesse in very rainy this morning Troy, TN Al, I don't suppose either you or Jesse have a 1/2-10 Acme tap laying around the shed do you? Regards, Harry MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.