Category Archives: Threading

Acme Tandem Tap

Posted on July 9, 2015 by dave49

This is a tap for cutting acme thread. It is of “tandem” configuration; the lead section cuts a triangular thread and the second section forms the trapezoidal acme profile. I bought it because I have the scheme to make a … Continue reading →

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Custom Tap Wrench

Posted on September 26, 2013 by dave49

Having a wrench guide virtually eliminates the breakage of taps. Sherline’s web site has “Machininsts Tips”, and number 7 shows a wrench for holding small taps. I have made a similar wrench. The brass sleeve is the guide, and is … Continue reading →

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Spindle Crank

Posted on July 5, 2013 by dave49

I keep a shaft collar clamped on the rear spindle extension of my lathe. It provides a grip for a small “gear puller” that I use to unlock MT1 fixtures from the spindle. The only time that I remove the … Continue reading →

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Tap for Aluminum

Posted on November 12, 2012 by dave49

The frame screws of my reels are 4-40 UNC. There are 10 such holes (foot & pillars) to tap for each reel. On repetitive tasks, it is good to have the best possible tool. McMaster-Carr sells “Vanadium Steel Hand Taps … Continue reading →

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