Member postings for Michael Gilligan

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Jo No’s use of locked-up bearings seemed ‘inspired’ to me …and could read-across to your support.

MichaelG.

I presume this is the very impressive video that you found, Cyril:

I wanted to check that I had the right company before mentioning that, Nick

… does anyone have a formal invoice with the Company number on it ?

MichaelG.

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Edit: __ from the ‘about us’ page:

Millions of taps & dies sold to many satisfied customers Worldwide, since 1978

Edited By Michael Gilligan on 23/08/2023 21:48:14

Does this look like the right firm Alan ?

**LINK**

https://wck2.companieshouse.gov.uk//compdetails

MichaelG.

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Sounds an attractive option

MichaelG.

Tony,

I didn’t really want to get involved in this rather unseemly discussion, but I have just added descriptive text to one of my pre-existing photos.

It only shows when viewing the album, thus:

**LINK**

https://www.model-engineer.co.uk/albums/member_photo.asp?a=59372&p=927243

MichaelG.

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Edited By Michael Gilligan on 23/08/2023 14:41:04

There are some very good double-sided tapes available these days

MichaelG.

For anyone really interested, here is a 188 page PhD thesis

**LINK** https://core.ac.uk/download/pdf/144148736.pdf

MichaelG.

For general reference … It may be worth repeating this, from a post a couple o& years ago:

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: __ The standard ‘Pin and Collar’ test is briefly described here:

SORRY … that link is dead 

The ISO and ASTM standards are technically similar, but ISO uses Metric units

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MichaelG.

Edited By Michael Gilligan on 23/08/2023 11:45:04

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… and, without claiming to really understand the chemistry, I would hazard a guess that [for brass] the drop to 0.4x strength is consistent with the accelerated curing time that I mentioned .

MichaelG.

Edited By Michael Gilligan on 23/08/2023 11:15:08

The material references are because that’s what is required for the standard test procedure

… You need to ‘read between the lines’ in a lot of other documentation to realise that Copper is an accelerator

MichaelG.

VERY nice, David

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I agree on the first part of that, Duncan … but not the second:

**LINK**

https://www.dimensions.com/element/american-football

MichaelG.

Thanks for your wisdom, Jo

I knew about golf-balls … but they move fast

I knew about shark-skin … but that moves through water

I had missed-out on the whale flipper.

MichaelG.

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P.S. __ for anyone interested:

https://www.startribune.com/obituaries/detail/0000362412/

Edited By Michael Gilligan on 22/08/2023 16:57:01

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Yes of course, Jo, or I wouldn’t have mentioned it

… What I don’t know is how relevant it would be at “pendulum speeds” … whatever those might be.

MichaelG.

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Whilst certainly not an aerodynamicist … I might ponder upon the not-so-humble golf-ball

MichaelG.

I would use 638 … but do beware that you may need a little groove [or a rather loose fit] to let any excess escape from a blind hole, and most importantly that it will probably harden quicker than you expect. … Copper is an accelerator for the reaction.

MichaelG.

Edited By Michael Gilligan on 22/08/2023 14:46:31

My reason for posting the video was simply that the Pico , with its different I/O capabilities is now easily usable by those familiar with Arduino.

Haven’t explored it yet, but that seems a good move on somebody’s part.

MichaelG.

Having never never seen the manufacturing line for the Pico, I was intrigued to see that RS offers them on a reel of 480 :

**LINK**

https://uk.rs-online.com/web/p/raspberry-pi/2122161?gb=b

MichaelG.