Dovetail math?

[Dinwoodie Cutlery Concepts]

I could use some help calculating spacing for cutting precision dovetail pins. Basically if my spacing between 30 degree ( included ) dovetail centers is X and I rotate my vise 15 degrees to cut the pins on the opposing piece what would the x measurement be after rotating? Thanks.

 

[ddickey]

Maybe this will help you? Scroll down to Measuring Dovetails.

Volume 7, No 12 - December, 2002

Home Metal Shop Club Newsletter for December 2002

www.homemetalshopclub.org

 

[Dinwoodie Cutlery Concepts]

Maybe this will help you? Scroll down to Measuring Dovetails.

Volume 7, No 12 - December, 2002

Home Metal Shop Club Newsletter for December 2002

www.homemetalshopclub.org

Maybe I should rephrase the question. It doesn’t necessarily have to be a dovetail it could be holes. If I were to drill a series of holes 1” apart and then turn the piece 15 degrees how do I mathematically find the center of each hole from each other on a 15 degree angle.

 

[RJSakowski]

I believe you will be looking at 1 x cos(15) = .966"

 

[RJSakowski]

 

[MrWhoopee]

Sort of makes you wish someone had told you that math would be important AFTER you got out of high school.

 

[Dinwoodie Cutlery Concepts]

I believe you will be looking at 1 x cos(15) = .966"

Exactly what I was looking for thanks.