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A tap guide is almost an essential tool. The are used in drill presses, lathes and mills to make certain taps get started straight. You can buy one for about $10 or machine one. Or you can follow the directions in this video and almost instantly make one from a Harbor Freight brass automatic center punch that you can buy for about $4. This video describes HSS, carbide tipped and carbide insert cutting tools. It also touches on tool shapes, right and left-hand cutting tools and setting the tool height. This movie from South Bend Lathe is about 70 years old but it is still very much worth watching if you would like to learn how to cut an acme thread on a manually operated lathe. The picture quality could be better and it’s advertising a video course. But this is still a very good instructional video about picking up a thread on a lathe. It’s also the only video we can find on that topic. |
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