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A comment on Ask HN: What problem are you close to solving and how can we help?. Parent comment

Re:Ask HN: What problem are you close to solving and how can... by marcosdumay on Sunday August 29, 2021 @03:16PM (#28349606)
Yes, I could. I believe the most straight forward design would be 3 micrometers directly supporting the piezoelectric component, with no levers.

Yet, they are a bit expensive. I'm still not willing to budget all that, but I'm starting to consider it.

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Re:Ask HN: What problem are you close to solving and how can... by minhmeoke on Sunday August 29, 2021 @03:37PM (#28349771)
Digital micrometers are expensive, but you can get analog ones on AliExpress [1] or other places for around $10. Of course, the precision may not be as good as name-brand (eg: Mitutoyo) tools.

[1] https://www.aliexpress.com/wholesale?catId=0&initiative_id=S...

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Re:Ask HN: What problem are you close to solving and how can... by marcosdumay on Sunday August 29, 2021 @03:51PM (#28349888)
Yes! Thanks a lot.

Looks like the exact thing I need are micrometer heads, and some even come with nice threaded mounts.

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Re:Ask HN: What problem are you close to solving and how can... by minhmeoke on Sunday August 29, 2021 @07:44PM (#28351528)
One more idea, there exist worm drive micrometers which allow you to step down the linear movement per revolution even more:

https://www.global-optosigma.com/en_jp/Catalogs/pno/?from=pa...

If you have machining/fabrication skills, it might also be possible to buy a few worm gear sets and modify your micrometer to move really slowly but precisely.

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Re:Ask HN: What problem are you close to solving and how can... by minhmeoke on Sunday August 29, 2021 @04:40PM (#28350261)
Excellent, glad that you found this to be helpful. Good luck with your project!
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