Find CENTER and RADIUS of an ARC on a circle - Prep for Wilton vise repair
3,170
Published 2019-01-11
Making a few intersecting lines we’ll see how easy it is, in this case I needed to get this done for installing a piece of a tilting Wilton 3 axis vise on a rotary table to perform some necessary repair.
Hope this helps some of you that may need to perform the task, one more trick in the toolbox, if you get more tricks or comments, just let me know… !!!!
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Sierra Specialty Auto, YouTube channel:
/ @sierraspecialtyauto7049
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Phil’s Projects
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Thank you for watching and I hope you like this type of video…
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Pierre Beaudry
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All Comments (21)
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You love a challenging job. Without using heat, it is certainly that.
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It's amazing what you can do with a compass and a straightedge. Now trisect an angle for us! Thanks for the shoutout, Pierre.
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Excellent video! I learned a lot!
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practical geometric constructions! love it! .-)
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Very cool, I hadn't thought of using a piece of paper and doing up the radii of intersection points to find arc center but it makes sense. Been a while since high school math for sure, thanks for sharing!
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That is helpful Pierre. Thanks
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Funny, I have the same dementia medicine here in NH Pierre! Good geometry lesson sir 👍
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Thank you, Pierre. This is a new technique to me. It's easy to understand the principles.
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enjoyed...like the Keld shout out...lol
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nicely done Pierre
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Nice video Pierre. I'm looking forawrd to seeing you apply this in a video that requires such machining! Mark
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This is good stuff Pierre - sort of thing I know (knew!?) but great to have a refresher. Thanks for the demo. :)
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Thanks for the tutorial Pierre. I am glad you got it done before the peppers. I don't think you have enough beer for that many peppers. I know you are going to sucker the other two monkeys into eating that.
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Yes, I learned that in school (yes, they did teach geometry and trigonometry in the olden days) but it was so long ago I'd forgotten, so thanks for that. However, you used a, b, c for the first triangle, so you need to use a', b', c' for the second, and a", b", c" for the third, else your calculations will be wrong. 🤣
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Great tutorial, very useful. I've done similar tasks before but with the trial and error way with the compass. Stella is good but when it comes to Belgian beer I'm a sucker for Chimay.
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A 60-degree triangle placed where all 3 sides are of equal length (where two intersect the arc) will have the third point on the center of the arc (unless you put it on the outside). While this may be no faster that the compass method, it will work with any arc >= 60 degrees. Any of the equal sides will be equal to the radius.
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Nice explanation! The beer is from Belgium not Denmark ;)
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I need a doctor like that! How effective was the dog anti-foulant?
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NIce explanation there Pierre ! Prescription ... ha, ha ... dementia ... did I say that ? I don't remember ... BTW, who are you ? ;-))
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Nice review of high school trig. Thanks. I am constructively lazy. I would have traced the arc, rotated the part along the arc, traced some more, ..., until I had a circle. Done.
