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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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What gives with this angle calc???
The standard taper 3/4 inch per foot is listed in Machinery's Handbook
as 3, 34, 47. When I calculate it I get 3,34,34. I get this answer using my TI calculator and my computer. Looking on the web I find the 3,34,47 answer. It's the angle I've always used. So how come I get something different? On my TI-30X calculator I divide .75 by 12 which equals .0625. This is the tangent. I then use the inverse tangent function to get the answer: 3.576334375. Then I use the DDDMS function which returns the answer: 3,34,34 80. So what's going on?????? Thanks, Confused machinist Eric |
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