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I'm working on a project where 100k spring cycles is gonna last a few months

Any recommendations on an alternative? I considered magnets but their sprigabilty isn't great (also, will they get demagnetize with constant repel forces?)

I'm working on a linear motion like that: https://www.pinterest.com/pin/337136722090812189/

SECRET MAGNETIC LOCK DRAWER

The spring will be 2cm in length and 3-4mm in diameter. Also, I can design it for a tension spring, will this make a difference?

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  • $\begingroup$ Trees do well... think about how many times they get moved by the wind. So wood? Depends on space, load, design but you give so little detail. $\endgroup$
    – Solar Mike
    Dec 15 '20 at 11:14
  • $\begingroup$ pinterest.com/pin/337136722090812189 $\endgroup$
    – Simon
    Dec 15 '20 at 11:26
  • $\begingroup$ Can you provide a source for where you heard that a regular spring wouldn't be OK for this? $\endgroup$
    – Jonathan R Swift
    Dec 15 '20 at 19:02
  • $\begingroup$ jamesspring.com/news/…. Maybe I understood incorrectly? $\endgroup$
    – Simon
    Dec 15 '20 at 21:05
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Compressed air like an air suspension in a car or truck. 100K is not many cycles for a steel spring; springs such as engine valves run many ,many millions of cycles ,normally without failure.

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  • $\begingroup$ Thanks! maybe I got the wrong info. The compression spring will be 2cm in length and 3-4mm in diameter, what material and type would you recommend? Also, I can design it for a tension spring, will this make a difference? $\endgroup$
    – Simon
    Dec 15 '20 at 16:33

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