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Member postings for Michael Gilligan

Here is a list of all the postings Michael Gilligan has made in our forums. Click on a thread name to jump to the thread.

Thread: simple tongs
12/07/2020 18:30:06

The best translator I have found is DeepL

.

O melhor tradutor que encontrei é DeepL

.

MichaelG.

.

https://www.deepl.com

Edited By Michael Gilligan on 12/07/2020 18:31:21

Thread: cateracts.
12/07/2020 08:58:17

My personal experience was wonderful, Clive

I will find my previous thread for you, but am also very happy to discuss by eMail if you wish.

MichaelG.

.

https://www.model-engineer.co.uk/forums/postings.asp?th=122662&p=1

Edited By Michael Gilligan on 12/07/2020 08:59:53

Thread: Stringer EW lathe
12/07/2020 08:54:33
Posted by Nigel Graham 2 on 12/07/2020 00:45:35:

[…]

Presently my EW is resting - a Myford ML7 does most of the work, a Harrison L5 is there for the bigger stuff; an Axminster "Micro-lathe" awaits a suitable bench.

It is resting though because the spindle and headstock castings are worn to the extent you can see the chuck "jump" when applying a cut, and it reveals what if anything is the weak point of this otherwise fine little lathe - others might find this too.

The spindle runs directly in the castings; and they are not very thick-walled.

The "obvious" solution is to bore out the castings, turn the spindle down, and insert a thin-walled bush, split to match the original adjustment, Unfortunately there is very little metal available for removal from either without weakening the headstock or compromising the spindle's fine-pitch thread for its retaining/ adjusting nuts. I investigated commercially-made bearing-bushes, but found none thin-walled enough to use without creating serious problems.

I think all I can do is […]

.

Just a thought, Nigel ...

Another option would be to make a significantly smaller diameter spindle, and bush the headstock to suit.
You already have bigger capacity lathes available, so perhaps the EW could be usefully adapted to suit more delicate work.

MichaelG.

Thread: Hallite washers
12/07/2020 08:29:37
Posted by not done it yet on 11/07/2020 23:57:29:
Posted by Brian Sweeting on 11/07/2020 20:06:33:

Are these bonded seals of any use?

Bonded seals

 

You mean a Dowty washer?

.

dont know ... I expect Dowty would be pleased to see that  ‘generic’ bonded seals are  not being marketed under their trade name.

MichaelG.

Edited By Michael Gilligan on 12/07/2020 08:31:38

Thread: Cutting brass with saw questions
11/07/2020 22:57:51

I am reviving this thread, to post a  **LINK**

https://www.ebay.ie/itm/Levin-Watchmakers-Lathe-Filing-Machine-Clock-Tool-Attachment-Filer-Die-/172822040549

The item is already sold, but it is worth a look if you are interested in building a ‘machine filling‘ attachment for a small lathe.

The design is by Levin; but, given that his book is rather pricey, it’s perhaps worth studying the ebay photos whilst they are still accessible.

MichaelG.

Edited By Michael Gilligan on 11/07/2020 23:00:29

Thread: Horological Tool Sale
11/07/2020 14:51:51

Thanks for the link, Martin yes

Some interesting items there ... but ‘condition is everything’ and it’s too far for me to travel to view.

MichaelG.

Thread: Just for fun
11/07/2020 13:52:19

Please excuse the stupidity of my previous edit blush

I was, of course, barking up exactly the right tree !!

MichaelG.

.

0bb17639-aa1e-4440-a7cf-44d1368521da.jpeg

Edited By Michael Gilligan on 11/07/2020 13:58:58

11/07/2020 10:03:47

Nice ones, Neilyes

... 'though my comment was actually intended as a clue to deciphering Sam's number

MichaelG.

.

Edit: Just realised, I was "barking up the wrong tree" blush

Edited By Michael Gilligan on 11/07/2020 10:17:28

11/07/2020 08:28:45
Posted by not done it yet on 11/07/2020 08:10:54:

[…]

Campanology perhaps?

.

That rings a bell laugh

... but you’re ‘cold’

I won’t spoil Sam’s fun though.

MichaelG.

Edited By Michael Gilligan on 11/07/2020 08:29:12

11/07/2020 06:25:05
Posted by Nigel Graham 2 on 11/07/2020 00:53:57:

The telephone number was for Scotland Yard, wasn't it?

I am not one of the "some", though I have a strange suspicion I have seen that number somewhere!

[…]

.

  1. Yes, Scotland Yard ... Hence the slightly tenuous relevance to my ‘security‘ recorder angel
  2. The 7 segment display on your calculator contains a cypher

MichaelG.

11/07/2020 00:48:58
Posted by Sam Stones on 11/07/2020 00:14:24:

[…]

However, does this number strike a chord with anyone …

Whitehall 1212?

Sam

.

I bought a secondhand ‘surveillance’ video recorder a few year back, Sam ... only to find that it was password-protected.

It didn’t take me very long to guess 1212

MichaelG.

Thread: We need Pi
11/07/2020 00:23:05
Posted by Nigel Graham 2 on 10/07/2020 23:41:43:

Michael Gilligan -

Do you mean Mathematical Pie?

It is still going strong!

I recall that from school in the early 1960s, complete with its groups of digits along the top or bottom margin, from some calculation of pi to some absurd length! I don't know if it still publishes the pi values. Try this direct quote resulting from searching just by the title alone:

 

Mathematical Pie - Mathematical Association

www.m-a.org.uk › mathematical-pie

 

[…]

.

Thanks, Nigel yes

Yes, I think that must be the one.

MichaelG.

.

http://www.mathematicalpie.com/

..., looks like the list of numbers stopped after issue 51 sad

 

Edited By Michael Gilligan on 11/07/2020 00:39:43

Thread: Ultrasound hardening of copper
10/07/2020 10:06:20
Posted by pgk pgk on 10/07/2020 09:42:55:
Posted by Michael Gilligan on 10/07/2020 08:21:53

.

I am well aware of that ... which is why I pointed you to 4.14

MichaelG.

T'was 4.14 I read a lot of until it wasn't going anywhere helpful ( a few pages past the high mag images). Typical PHD thesis of the era... volume, volume, volume

pgk

.

dont know Funny, that ...

What I read in 4.14 was about sample dimensions, depth of immersion, ultrasonic power, and duration [and more] ... all packed into less than one page.

That, together with the documented results was sufficient to convince me that you would be wasting your time [and that of anyone who steps forward to do a 30 min test for you].

MichaelG.

secret

Thread: Back issues & Flash plugin
10/07/2020 08:50:50
Posted by JasonB on 10/07/2020 07:25:01:

I expect Neil's reply from a couple of months ago still stands.

Posted by Neil Wyatt on 20/04/2020 20:40:04:

The problem is the archives are not a significant source of income, at present they are added value for what is still a relatively modest number of people who prefer a digital subscription. Partly this is because pirate digital copies of archive issues have effectively removed the potential value of a rejuvenated archive.

[…]

So my advice is grit your teeth and find flash player/browser combination that works for you; I know it isn't ideal but it is doable.

What we can do is create a page with links to reliable flash players/browsers for viewing the archive on different platforms.

[…]

.

... and if that is the best that can be done, then the Print edition of MEW remains my choice, and archival storage my responsibility.

MichaelG.

Thread: Ultrasound hardening of copper
10/07/2020 08:21:53
Posted by pgk pgk on 10/07/2020 04:49:07:

MichaelG:

That article discusses copper plating in an ultrasonic bath as a ' beter' deposit and comments on hardening and cavitation of the foil electrodes from prolonged use. So it does support the idea but doesnt really answer the practical question here.

[…]

Perhaps someone wth an ultrasonic cleaner would care to cut two small strips of copper... anneal them and drop one in an ultrasonic cleaner for say 30 mins (sans pickle) and do a simple bend test on the two samples?

pgk

.

I am well aware of that ... which is why I pointed you to 4.14

MichaelG.

Thread: Leadscrew suppliers
10/07/2020 08:16:40
Posted by Pete. on 10/07/2020 01:04:13:
Posted by Michael Gilligan on 09/07/2020 07:27:53:
[…]

Sorry, I'd had long day when I wrote that, I'm not surprised you didn't understand it, I don't.

[…]

.

It happens to us all, Pete yes

... go for the 2mm pitch.

MichaelG.

Thread: Ultrasound hardening of copper
09/07/2020 23:32:02

210 page PhD thesis, dated 1974

Sorry, haven’t had time to read it

**LINK**

http://epubs.surrey.ac.uk/848536/1/10804105.pdf

... You may want to jump-in at 4.14

MichaelG.

Thread: Laser DRO sensor
09/07/2020 17:40:16

Too late to edit:

This is a useful reference to Avago sensors: **LINK**

https://www.bidouille.org/files/hack/mousecam/Understanding%20Optical%20Mice%20White%20Paper.pdf

Dated 2006 ... so there may be a newer version available

MichaelG.

09/07/2020 17:01:41
Posted by John Hinkley on 09/07/2020 14:07:01:

Oh well. Another seven years on the back burner, then!

John

.

That should give you plenty of time to read this, John

**LINK**

http://www.dicklyon.com/tech/OMouse/OpticalMouse-Lyon.pdf

MichaelG.

09/07/2020 10:36:31
Posted by John Hinkley on 09/07/2020 10:24:37:

[…]

Michael G. is quite right. I envisaged the camera to "look" at the upper face of the saddle, for example. A strip of metal along the bed of the lathe at the rear would perform the same function. No "pattern" required, or so I understand.

John

.

The Wikipedia page gives a useful overview: **LINK**

https://en.wikipedia.org/wiki/Optical_mouse

... but I’m sure I have a good article tucked-away somewhere

I may be back later

MichaelG.

.

... and I am back

http://tim.cexx.org/?p=613

 

Edited By Michael Gilligan on 09/07/2020 11:06:00

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