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Math Question

Discussion in 'General Woodturning Discussion' started by Johnturner, Jul 24, 2019.

  1. Johnturner

    Johnturner Proud Member Full Member Thread Starter

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    Is there a way to determine what the maximum diameter that can be turned from a square piece of wood?
    For example You have a blank 2"x2" x10" Can you get a 2" diameter blank? Thanks John
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  2. Nubsnstubs

    Nubsnstubs Where is it??? Full Member

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    Why not?? You just have to be extremely precise in centering it............... Jerry (in Tucson)
     
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  3. Albert Kiebert

    Albert Kiebert Member Full Member

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    Max. Dia. of a square piece of wood ??? The way I find out is to first, find the center of smaller end then take a compass and set it in the center with one leg and touch one side with other leg, then sweep compass in circle, adjust center until you get a full circle around your square piece of wood. That will tell you your max size, then do as Jerry mentions above.
     
  4. TimR

    TimR Sawdust Engineer Full Member

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    John, the short answer is a square blank, centered precisely, will yield a diameter that is the same as the width of the sides. That being said, almost always off by about 1/16”, so always start with a blank with sides just a little more than final diameter wanted.
     
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  5. Johnturner

    Johnturner Proud Member Full Member Thread Starter

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    Thanks Tim that is the answer I was looking for

     
  6. Patrude

    Patrude Member Full Member

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    I find center , use an awl to mark it and scribe a circle. That's only going to get you a close idea of what you can get out of the blank. Once its mounted you may end up taking more with your roughing out.
     
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