[Woodcarver] Geometry question for the group

[Sylda]

Susan, 
You made this simple enough for even ME to understand.  I just deleted most
of the other as they were way over my head, but I can figure this one out.

Now I have another question -- I do anniversary & birth plates using bass
wood or butternut plates that I get from John Krantz or Montzka Woodworking.
My problem is this -- The plates have a 2/3 inch rim which I put the name
and date on.  My problem is:  getting the writing centered/spaced accurately
around this rim.  I would like to have software that would do this for me.
I have been doing this by impressing the plate rim on paper and free handing
the writing until It looks right.  I've done it enough that it only takes a
time or two, but would like it to be able to be in fonts and not my hand
writing.  Any suggestions?

Sylda





On 9/30/04 7:33 AM, "Classic Carving Patterns" <irish at carvingpatterns.com>
wrote:

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> -----Original Message-----
> From: Classic Carving Patterns [mailto:irish at carvingpatterns.com]
> Sent: Thursday, September 30, 2004 9:05 AM
> To: '[Woodcarver]'
> Subject: RE: [Woodcarver] Geometry question for the group
> 
> 
> It's been a very long time since I have had to do any geometry equations
> ... But as I remember a prime number is defined as being evenly
> divisible only by 1 and by itself; 13 divided by 1 = 13 and 13 divided
> by 13 = 1. So what I would do is first create a circle that has a 13"
> circumference.  Therefore you have a point every one inch along the
> outer circumference line and you have a center point to create the
> radius lines.  Those lines will be true then for any sized circle that
> you need, you only need to extend them to the new outer edge of the
> larger circle.
> 
> Susan
> 
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> 
> -----Original Message-----
> From: woodcarver-bounces at six.pairlist.net
> [mailto:woodcarver-bounces at six.pairlist.net] On Behalf Of Victor
> Hamburger
> Sent: Thursday, September 30, 2004 8:53 AM
> To: [Woodcarver]
> Subject: Re: [Woodcarver] Geometry question for the group
> 
> 
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> Tom Clarke wrote:
>> 
>> Are just some of what's out there. Using the formula's given a side
>> length or taking an exterior circle one could then draw the polygon
> for any sided.
>> Problem with one with 13 sides is the angle isn't a whole number.
> Probably give you
>> fits.
> 
> Tom, and Ivan,
> 
> Thanks for the comments, I had found the DrMath site but didn't try the
> math. 
> 13 is a prime number, indivisible except by 1, causing some of the
> problem. 
> What I want to understand is how, using only a compass and straightedge,
> do you 
> lay out the 13 point star.  I have various solutions for 4,5,6,8 and 12
> point 
> stars.  I can bisect any of those sides to create a star with twice
> those 
> points, but 13, being prime, has got to be done by itself.
> 
> The builders 800+ yrs ago knew how to do it with a compass and
> straightedge, and
> I would like to duplicate that.  As I said, I can lay it out with a CAd
> program 
> no problem, I just like the challenge of doing it with the simple tools
> of the 
> master craftsman of earlier times.  The pyramids and Greek Temples and
> Roman 
> empire were built with these tools, I am curious to try a more complex
> figure 
> for myself.
> 
> Thanks,  Vic H
> 
> 
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