Bernoulli Spiral Cam Clamps

garagewoodworks · Post by **garagewoodworks** » Mon Mar 05, 2012 11:26 pm

New here. Just registered.

Wanted to share an idea I had a couple weeks ago that will transform how you use your workbench:

See the Video here.

I'd love to hear your thoughts.

Cheers,
Brian
www.garagewoodworks.com

derekdarling · Post by **derekdarling** » Tue Mar 06, 2012 12:18 am

Everything old is new again. Saw something like this years ago, not to say your idea isn't brilliant... it is! Great ideas seem to happen all over the place. Great shot, by the way. gives a clear story with no words needed.

Why 'Bernoulli'?

Derek

eartigas · Post by **eartigas** » Tue Mar 06, 2012 6:26 am

Brian:

Welcome on board. I follow you in you tube.
It's great to have new blood in the group. I will incorporate these in my bench, now under construction
Thanks

Gene Howe · Post by **Gene Howe** » Tue Mar 06, 2012 8:51 am

derekdarling wrote:
Why 'Bernoulli'?

Derek

Maybe 'Bernoulli' could be the effect of "sucking" the work to the bench????;)
And, Fibonacci would be the design of the "suckers"?????;)

garagewoodworks · Post by **garagewoodworks** » Tue Mar 06, 2012 11:02 am

derekdarling wrote:Everything old is new again. Saw something like this years ago, not to say your idea isn't brilliant... it is! Great ideas seem to happen all over the place. Great shot, by the way. gives a clear story with no words needed.

Why 'Bernoulli'?

Derek

Because a Bernoulli log spiral was used to make the template.

dusty · Post by **dusty** » Tue Mar 06, 2012 11:44 am

garagewoodworks wrote:Because a Bernoulli log spiral was used to make the template.

I think that was the question. Why did you use the Bernoulli Logarithmic Spiral rather than any other curve. Maybe the answer is as simple as "That is the curve template that I had handy when I needed it".

I would have used the one and only french curve template I have in the shop. Bernoulli or No.

garagewoodworks · Post by **garagewoodworks** » Tue Mar 06, 2012 11:56 am

dusty wrote:I think that was the question. Why did you use the Bernoulli Logarithmic Spiral rather than any other curve. Maybe the answer is as simple as "That is the curve template that I had handy when I needed it".

I would have used the one and only french curve template I have in the shop. Bernoulli or No.

Because I wanted the distance to get smaller inbetween the two clamps by a logarithmic factor as they rotated. I just thought it would be the best approach. The spiral I used was actually a Bernoulli spiral that also satisfied the 'golden ratio'. It expanded outward by a factor of the golden ratio for every 90 degrees of rotation. And no, I didn't have one laying around. Google and Photoshop to the rescue. :^)

It worked nicely. I plan on making a few more today or tomorrow.

Gene Howe · Post by **Gene Howe** » Tue Mar 06, 2012 12:10 pm

I love learning new stuff. Had no idea the Bernoulli spiral and the Fibonacci were the same thing. Both contribute to the golden ratio,too. Interesting!
The Bernoulli effect, as it applies to vacuum or airfoil lift was the only application I was aware of.
Anyhow, no matter what you used, it's a neat idea.

joedw00 · Post by **joedw00** » Tue Mar 06, 2012 1:16 pm

Welcome to the forum Brian. I just found your website recently. Glad to see you here.

dusty · Post by **dusty** » Tue Mar 06, 2012 1:21 pm

Gene Howe wrote:I love learning new stuff. Had no idea the Bernoulli spiral and the Fibonacci were the same thing. Both contribute to the golden ratio,too. Interesting!
The Bernoulli effect, as it applies to vacuum or airfoil lift was the only application I was aware of.
Anyhow, no matter what you used, it's a neat idea.

If only I had realized (or had been taught by a teacher or professor) that there were real uses for these things. Calculus class would have been a lot more fun.

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