Kevin McPeek
09-25-2007, 8:13 PM
A few of us have touched on phi (the golden ratio) a few times here and there. In doing research I found a web page that showed how to make a phi gauge...so I did.
I took a blank that I would get about a 4" diameter out of and went from there. Now some (all) of my choices were arbitrarily chosen as to what portion of phi I used. I used a phi calculator to come up with the following dimensions. http://www.calculator.com/calcs/calc_golden.html
Anyway, using 4" diameter I calculated that I should have a height of 6.472". Using that I deducted that the largest diameter should be 2.472" from the top or bottom, I chose top. Then using the diameter I found that the top or bottom should be 2.472, I chose top, and the other end should be 1.527, which is where I intended the bottom to be. A "design opportunity" left me having a bottom around 1 1/4".
Somewhere along the way I buggered up the form, and I left the bottom a little too heavy, I was worried about it falling over but I over compensated for it.
Anyway, heres what I ended up with. The blank has a crack in it so its staying home anyway, so I'm not all that broken up about it.
I took a blank that I would get about a 4" diameter out of and went from there. Now some (all) of my choices were arbitrarily chosen as to what portion of phi I used. I used a phi calculator to come up with the following dimensions. http://www.calculator.com/calcs/calc_golden.html
Anyway, using 4" diameter I calculated that I should have a height of 6.472". Using that I deducted that the largest diameter should be 2.472" from the top or bottom, I chose top. Then using the diameter I found that the top or bottom should be 2.472, I chose top, and the other end should be 1.527, which is where I intended the bottom to be. A "design opportunity" left me having a bottom around 1 1/4".
Somewhere along the way I buggered up the form, and I left the bottom a little too heavy, I was worried about it falling over but I over compensated for it.
Anyway, heres what I ended up with. The blank has a crack in it so its staying home anyway, so I'm not all that broken up about it.