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" There's nothing wrong with being an a$$ when necessary. Others dictate the necessity." I can't quite agree. Having btdt I can assure you that the only time it might not cause you more harm than good is when dealing with bullies and that is a special case where other optionsxare almost always...

Look guys, forget about it. Jim

I have no desire to get personal. In response to criticisms that I have butchered the King's English, with one exception, easily interpreted correctly as pointed out, I have been extremely precise in my usage. Those who have dealt with the patent application process will clearly recognize this...

http://www.designinsite.dk/htmsider/k0053.htm

The NiTiNOL would be operating in the superplastic phase. There may be other suitable Ti alloys, corrosion resistance would be a question. I will have another look at the 301 later today. This is my fall back position if the stainless does not exhibit adequate range of motion.[highlight...

So. Nick or anyone else, do you have a vendor and an online address for me? In spite of all the talk nothing has changed. That is still the objective. Jim

I have results. Recall if you will that I said the spring pressure requirement would not paint me into a corner? Hold that thought. The hinge supports a load of maybe 60 lbs spread over a length of 4 ft and shared by two hinges. The hinge pin is located just off the balance point and is...

Ah yes, the spring rate. I knew all along that would be wanted but sometimes life has higher priorities. I will get that though, perhaps even this evening. It will not be particularly high, certainly not enough to paint me into a corner, but I will let you know. As for all of these high dollar...

Now I have been designing and building prototypes for upwards of 45 years and many have been the times that I've helped an engineer out of the proverbial corner, and many have been the times that I have helped them improve their designs before the patent apps were filed. So I don't think it is...

Thanks Nick. Stiffness is the issue, hardness is really not a concern. The 301 deforms so easily that there is not even any point in cutting out the blanks. Apparently I didn'get what I thought I was. I should have known better, I've worked with 301 before, but in heat treated form I expected...

Turned out to be not a very good choice however as the 301 is entirely too soft even in the full hard spec. So, exactly the result I was trying to avoid. Fifty bucks spent on material I can't use and another delay. And I'm back to the original question: Does anyone know where I can buy a small...

I guess I will go with the. 031" thick full hard 301SS strip from McMasterCarr and a multi-leaf design. I expect 3 leaves will be just about right but that will be easy to tune. Jim

Correct, and correct. But the cost is greater to build the spring twice than it is to build it once using the very best materials. Ergo the search for a premium grade corrosion resistant strip. It will indeed be a cantiliver/slipper arrangement. If stainless is used a 2 or 3 leaf construction is...

Hello all. New guy here. I build prototypes (usually mechanical but it varies) with concentration primarily in the automotive and agricultural fields. Right now I need to make a pair of leaf springs for a set of hinges to bias them in one direction and could use some help in finding a source for...