|This is a discussion on Determining a radius cut within the Jigs and Fixtures forums, part of the Routers category; I came across a note on in a article that mentions a radius cut of ...|
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|06-22-2008, 10:36 AM||#1 (permalink)|
I came across a note on in a article that mentions a radius cut of 40". The length of the wood piece is only about 24". I know how to cut arcs and circles from the jigs I have made for my other tools but I have not seen a radius described that way before.
Does this mean center my arc jig on the length of the board (12") and nail it down at 20" (half of 40") to achieve the correct arc for the radius.
Any help would be appreciated.
|06-22-2008, 02:52 PM||#2 (permalink)|
I was thinking I could have described this a little better. Does a 40" radius mean essentially a 40" circle?
I am going to try a back into the answer with a little trial and error since I know all the dimensions and how to calculate the radius.
|06-22-2008, 05:54 PM||#4 (permalink)|
Got tied up today but this evening I am going to just lay it out on a piece of paper and draw the radius. In this case I know what the final dimensions should be. I need to get this one right because I have a nice piece of cedar I am going to be working on.
Thanks for the help.
|06-22-2008, 06:17 PM||#5 (permalink)|
Join Date: Jan 2006
Country: United States
First Name: Bj
Definitions of radius
* the length of a line segment between the center and circumference of a circle or sphere
* a straight line from the center to the perimeter of a circle (or from the center to the surface of a sphere)
* a circular region whose area is indicated by the length of its radius; "they located it within a radius of 2 miles"
* the outer and slightly shorter of the two bones of the human forearm
* spoke: support consisting of a radial member of a wheel joining the hub to the rim
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Last edited by bobj3; 06-22-2008 at 06:19 PM.
|06-22-2008, 11:18 PM||#7 (permalink)|
I don't know what the article is about but assume that a 24" length of wood is going to be curved, in which case mark the centre of the wood, draw a line 40" long at right angles to the centre of the wood and with a jig or a piece of string with a pencil tied to it's end draw an arc on the wood. These shots show in a crude but fast demo.of how I interpreted your first post.
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