# I think I solved a 40 yr old machine problem!

**URL:** <https://boards.straightdope.com/t/i-think-i-solved-a-40-yr-old-machine-problem/982261>\
**Category:** Miscellaneous and Personal Stuff I Must Share\
**Created:** [April 6, 2023, 4:41pm UTC](https://boards.straightdope.com/t/i-think-i-solved-a-40-yr-old-machine-problem/982261 "2023-04-06T16:41:05Z")\
**Posts on this page:** 4\
**Page:** 2

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**Author:** ![beowulff](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/beowulff/32/542_2.png) [@beowulff](https://boards.straightdope.com/u/beowulff)\
**Post date:** [April 6, 2023, 10:13pm UTC](https://boards.straightdope.com/t/i-think-i-solved-a-40-yr-old-machine-problem/982261/21 "2023-04-06T22:13:31Z")

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You said this rotated at 75RPM? That’s really, really slow.  
Very hard for me to believe that any significant about of distortion could develop due to centrifugal force.  
But, one thing that was never mentioned - were the bags printed?  
I mean - was there a distinct edge that was supposed to line up with the opening of the bag?

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**Author:** ![HoneyBadgerDC](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/honeybadgerdc/32/1033_2.png) [@HoneyBadgerDC](https://boards.straightdope.com/u/HoneyBadgerDC)\
**Post date:** [April 6, 2023, 10:36pm UTC](https://boards.straightdope.com/t/i-think-i-solved-a-40-yr-old-machine-problem/982261/22 "2023-04-06T22:36:52Z")

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> [@beowulff](#):
>
> I mean - was there a distinct edge that was supposed to line up with the opening of the bag?

Printed yes but no need for a pattern repeat.

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**Author:** ![Pork\_Rind](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/pork_rind/32/111_2.png) [@Pork\_Rind](https://boards.straightdope.com/u/Pork_Rind)\
**Post date:** [April 6, 2023, 11:04pm UTC](https://boards.straightdope.com/t/i-think-i-solved-a-40-yr-old-machine-problem/982261/23 "2023-04-06T23:04:00Z")

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Are you really sure it was the shaft? I sketched out the apparatus and it became clear to me that once you got 14 k of g in a fpd, the whole mechanism began to oscillate and produce the shorter bags.

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**Author:** ![HoneyBadgerDC](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/honeybadgerdc/32/1033_2.png) [@HoneyBadgerDC](https://boards.straightdope.com/u/HoneyBadgerDC)\
**Post date:** [April 7, 2023, 1:44am UTC](https://boards.straightdope.com/t/i-think-i-solved-a-40-yr-old-machine-problem/982261/24 "2023-04-07T01:44:52Z")

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Ths shaft was only a problem because my micro switch setting was set too sensitive. A slight push in on it and I dont think it would have done this.

> [@Pork\_Rind](#):
>
> Are you really sure it was the shaft? I sketched out the apparatus and it became clear to me that once you got 14 k of g in a fpd, the whole mechanism began to oscillate and produce the shorter bags

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