What is a good mechanical engineering forum for home projects?

I have tried www.eng-tips.com, but I cant log on. Maybe some sort of approval scheme?? I have registered. Anyway that is more for job-related stuff. I

I have tried www.eng-tips.com, but I can't log on. Maybe some sort of approval scheme?? I have registered.
Anyway that is more for job-related stuff. I want help to find relevant spring formulas for annular wavy springs(not the standard face-wavy ones)
for a home project.

or:I have tried www.eng-tips.com, but I can't log on. Maybe some sort of approval scheme?? I have registered. Anyway that is more for job-related stuff. I want help to find relevant spring formulas for annular wavy springs(not the standard face-wavy ones)for a home project.

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