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Gauge Block Wringing

 

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?This is a less than 1 minute or so video "short" from YouTube: Gauge Block Wringing.

?Precision machined gauge blocks will stick together as shown in the video, and also - at least as far as claimed in the video - nobody knows why.

?:-)
 

There are explainations of why they stick together - if you search for

why do gauge blocks stick together

you will find multiple videos and multiple sites that explain why they stick together.

This video tells a good summary:



On Sat, Feb 3, 2024 at 2:39?PM OneBike2Ride <JZ@...> wrote:

?This is a less than 1 minute or so video "short" from YouTube: Gauge Block Wringing.

?Precision machined gauge blocks will stick together as shown in the video, and also - at least as far as claimed in the video - nobody knows why.

?:-)



--
Buffalo John
 

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Hi OneBike2Ride. The simple answer is, wringing the blocks together expels any air between them.

So that the air pressure outside the blocks presses them and keeps them together.

As blocks wear, so air leaks in and the pressure drops.

????????? Ellis

?

?

?

?This is a less than 1 minute or so video "short" from YouTube: Gauge Block Wringing.

?Precision machined gauge blocks will stick together as shown in the video, and also - at least as far as claimed in the video - nobody knows why.

?:-)
 

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Dear Ellis, Thank you for the information. (Interesting.) David?

On 4 Feb 2024, at 09:13, Ellis Cory via groups.io <ellis103@...> wrote:

?

Hi OneBike2Ride. The simple answer is, wringing the blocks together expels any air between them.

So that the air pressure outside the blocks presses them and keeps them together.

As blocks wear, so air leaks in and the pressure drops.

????????? Ellis

?

?

?

?This is a less than 1 minute or so video "short" from YouTube: Gauge Block Wringing.

?Precision machined gauge blocks will stick together as shown in the video, and also - at least as far as claimed in the video - nobody knows why.

?:-)
 

I remember (60 years ago) in high school physic having a demonstration of finely machined steel blocks that would stick together.
--
Lone Tree, Colorado? ?USA
 

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Hi Craig. I remember, 60 years ago, in my apprenticeship as a precision toolmaker, using them !

????????? Ellis

?

?

?

I remember (60 years ago) in high school physic having a demonstration of finely machined steel blocks that would stick together.
--
Lone Tree, Colorado? ?USA

 

I have a set in 50 years only used a few times.? Not best purchase.?

At time we where thousands of casting need a bore for a ball bearing ±0.000,1 fit.?
A ball bearing was simpler to use.

Dave?
 

[Default] On Sun, 4 Feb 2024 09:13:02 -0000, "Ellis Cory via
groups.io" <ellis103@...> wrote:

The simple answer is, wringing the blocks together expels any air between them.

So that the air pressure outside the blocks presses them and keeps them together.
Cody over at the Youtube channel Cody's lab has a vacuum chamber with
which he did some tests to try to confirm this:



In his words: "Nope".
--
Helge
 

Hi Helge. He didn't seem to come to any conclusion, despite several
attempts.
I'm not sure how precise the experiment was. Is the equipment, a plastic
bucket and glass or plastic cover, up to the job ?
Despite the meter readings, which could display what the vacuum pump was
achieving, I'm not convinced that there was a complete airtight seal.
Other than that, as posters mentioned below the video, what other
explanations are there ?
Ellis



Cody over at the Youtube channel Cody's lab has a vacuum chamber with which
he did some tests to try to confirm this:

In his words: "Nope".
--
Helge
 

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It is likely a combination of forces:?

1: an extremely thin film of residual oil
2: the afore-mentioned air pressure
3: Van der Waals forces between the gage blocks

(Note 1 and 3 are substantially the same, because the oil molecules ’stick’ to surfaces via van der waals forces as well. ?’Surface Tension’ is a manifestation of that)



On Feb 6, 2024, at 7:19 AM, Ellis Cory via groups.io <ellis103@...> wrote:

Hi Helge. He didn't seem to come to any conclusion, despite several
attempts.
I'm not sure how precise the experiment was. Is the equipment, a plastic
bucket and glass or plastic cover, up to the job ?
Despite the meter readings, which could display what the vacuum pump was
achieving, I'm not convinced that there was a complete airtight seal.
Other than that, as posters mentioned below the video, what other
explanations are there ?
??????????Ellis



Cody over at the Youtube channel Cody's lab has a vacuum chamber with which
he did some tests to try to confirm this:
https://www.youtube.com/watch?v=jNEvS_bjKIo
In his words: "Nope".
--
Helge







--?
Bruce Johnson

The less a man knows about how sausages and laws are made, the easier it is to steal his vote and give him botulism.

 

What is interesting about wring is try with Aluminum or some types of stainless they would weld together not wring like like gauge block steel.??

Dave?

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