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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: lathe to cut 26tpi
16/01/2019 16:32:06
Posted by JasonB on 16/01/2019 14:55:45:

The driving force behind imperial far eastern lathes is the US market where 26tpi is not common so little demand to have it on a lathe. European model engineers have been using 1.0mm pitch metric for years and all their fittings are sold in metric fine pitches so only the odd block around the world with an old British bike or old model engineer may want it.

.

Admittedly not 'current' but some may be interested to know that the original Leica camera screw thread was 26tpi although it is often referred to as 39 x 1mm

MichaelG.

16/01/2019 14:47:39
Posted by Bazyle on 16/01/2019 14:37:22:

Given that 26 tpi, as per the op's need, is fairly common worldwide even in metric countries, it is a pretty poor show that it is not one of the standard threads the lathe designer/specifier listed as a mandatory feature. It shows how the manufacturers and procurement departments are totally divorced from any real life use of their product.

.

Well said yes

MichaelG.

Thread: Bending copper pipe
16/01/2019 14:43:52
Posted by Robert Atkinson 2 on 16/01/2019 13:02:41:

One advantage of Cerrobend is that it expands slightly on freezing making a tighter packing. Lead shrinks. Water expands too, maybe too much.

.

yes excellent point, and why I wanted to top-up my pitifully small stock

Following FMES's link, I asked for an indicative price, and they replied promptly:

We can offer as follows,

1 kilo Bend alloy £68.00 + VAT

Delivery: From stock
Carriage: UPS £16
Terms: Payment against a pro forma invoice, by bank transfer.

.

MichaelG.

Thread: lathe to cut 26tpi
16/01/2019 13:07:41
Posted by Brian G on 16/01/2019 12:26:06:

In general terms the country of origin is the country in which the last substantial transformation took place.

[ ... ]

BTW, when it comes to British made manual lathes, what about Cowells? **LINK**

.

Quite so, Brian ... I am aware of the general terms regarding COO

... so I suppose what I find 'interesting' is BoxFord's claim to have

"The only manual lathe you can buy ... "

Jason's back-handed remark notwithstanding: I am interested to know how it comes that neither Myford nor Cowells has successfully challenged this statement.

MichaelG.

.

[quote]

The only manual lathe you can buy which is still truly Made in Britain

[/quote]

Edited By Michael Gilligan on 16/01/2019 13:09:29

16/01/2019 11:45:09
Posted by ega on 16/01/2019 11:03:36:

My expensive walking boots claim to be "Engineered in Italy"; not readily visible on the back of the label it says "Assembled in Romania".

Fortunately, my feet can't read!

.

"Engineered" has long been a 'weasel word' in the marketing context.

But I think we have specific legislation to cover the use/misuse of "made"

... If I can find it, I will post something.

MichaelG.

.

Edit: This is the best I have found so far:

https://www.twobirds.com/en/news/articles/2014/global/european-parliament-votes-for-compulsory-made-in-labels

Edited By Michael Gilligan on 16/01/2019 12:10:55

Thread: Gold Plating
16/01/2019 10:38:07
Posted by Rob Rimmer on 16/01/2019 10:26:20:

... and maybe contacting Gateros Plating for advice.

.

**LINK**

https://www.gaterosplating.co.uk/plating-kits

Thread: Use of Colour on Drawings
16/01/2019 10:24:49

Mike Poole's post makes the point very well, I think.

A supplementary illustration, in colour, 3D, or whatever, may be interesting/helpful ... but the drawing itself should remain true to his teachers' advice.

MichaelG.

Thread: lathe to cut 26tpi
16/01/2019 10:15:48
Posted by not done it yet on 16/01/2019 07:44:37:

In other words, does ‘manufactured’ mean ‘made’, or not?

.

As per my reply to David ... both companies use the word 'made'

Although BoxFord adds emphasis with '... truly Made in Britain'

MichaelG.

16/01/2019 10:09:22
Posted by David Standing 1 on 16/01/2019 09:25:43:

... there can be a lot of difference between 'made' and 'assembled', with some creative use of the word 'made'!

.

... and that is essentially what I find 'interesting'

[ neither company admits 'assembled' ]

Comparing the two statements, it is difficult to see how both of them can be true.

.

MichaelG.

15/01/2019 22:02:37
Posted by David Standing 1 on 15/01/2019 21:50:53:

Go on Michael, I'll bite wink

.

From the Myford home-page https://www.myford.co.uk

[quote]

New high speed Super 7 Connoiseur lathes are made here, on site, in the UK

[/quote]

.

Can both be right ?

... or are we in the realm of 'weasel' definitions ?

MichaelG.

Edited By Michael Gilligan on 15/01/2019 22:03:58

15/01/2019 20:20:07

Posted by SillyOldDuffer on 15/01/2019 14:14:07:

... you might buy a new Boxford.

.

My apologies for drifting off-topic, but I continue to find this assertion [from Dave's linked page] 'interesting'

[quote]

The only manual lathe you can buy which is still truly Made in Britain

[/quote]

.

dont know MichaelG.

Thread: nylon gib strip grub screws?
15/01/2019 18:46:05

For info. ... Nylok [or probably a clone] screws, as mentioned above, are so effective and so commonplace that IKEA is using them.

MichaelG.

15/01/2019 08:07:00

Peter,

You might find a few hints in this previous thread:

**LINK**

https://www.model-engineer.co.uk/forums/postings.asp?th=99448&p=2

MichaelG.

.

Specifically my link to this alternative with similar functionality:

https://nylok.com/products/nylok-blue-patch

Edited By Michael Gilligan on 15/01/2019 08:12:21

15/01/2019 00:54:55

What size are you looking for, Peter ?

MichaelG.

15/01/2019 00:20:41

Peter,

They are also known as wedglok: **LINK**

https://www.fastenerdata.co.uk/thread-patch-pellet-tip

MichaelG.

.

Waggonerman beat me to it.

Edited By Michael Gilligan on 15/01/2019 00:21:44

Thread: Model Turbines
14/01/2019 21:52:58

Thanks for starting this, TG ... I'm sure that Turbines are under-used, at least by non-dentists.

I'm already pondering the possibilities of a very high speed milling/drilling spindle for the BCA.

... Keep it coming.

MichaelG.

Thread: Ball bearing spindles
14/01/2019 19:57:16
Posted by Chris Trice on 14/01/2019 19:43:07:

The way I understand ball bearings are made, they're made in batches, so if they are inaccurate in their nominal size, all the ball bearings in that batch are uniformly inaccurate and therefore the tripod scenario you suggest is not likely to be an issue within measurable tolerances. ...

.

Fair point, Chris ... but:

I can't recall where or when [and it may have been a 'top shelf' item for Metrologyphiles], but I have seen a demonstration where ball bearings were selected from a batch by the simple expedient of trapping them between two flats ... all but the three largest dropped out !!

MichaelG.

.

Edit: This may be of interest

https://www.precisionballs.com/ballgradechart.pdf

Edited By Michael Gilligan on 14/01/2019 20:13:58

14/01/2019 19:28:33
Posted by Neil Wyatt on 14/01/2019 19:02:40:
Posted by Michael Gilligan on 14/01/2019 18:12:06:

Thanks both

Frankly, I still think that [unless deliberately built to behave as you suggest], a real-world slack/loose bearing will have balls with wider dimensional tolerance than the sooper-dooper version. The first contact will then be on the three largest balls in the set, and the preload will be applied to that tripod ...

Brinelling, anyone ?

MichaelG.

According to the article I linked, bearing quality is NOT related to bearing spacing. You can have a high quality slack bearing.

"There is often confusion with “looseness” and precision level. Radial play is specified independently of ABEC tolerance classes for rings."

So perhaps we are worrying about the wrong things.

But an angular contact bearing will still be better than a deep groove bearing for taking end thrust.

Neil

.

Thanks, Neil

I wonder how 'what you can have' compares with 'what you typically get'

... All down to from whom you buy, I guess.

MichaelG.

Edited By Michael Gilligan on 14/01/2019 19:30:08

Thread: Small Milling/Drilling Spindle (again)
14/01/2019 18:33:50
Posted by Steve Crow on 14/01/2019 18:19:45:

I intend to use the frame horizontally on the vertical slide and the only way to drive it is outboard. I think ball-bearings might be the only way to go with that.

.

In which case, Bill Ooms is the man: **LINK**

https://www.billooms.com/resourceOT.html

MichaelG.

Thread: London Model Engineering Exhibition - Alexandra Palace
14/01/2019 18:27:36

I had heard that ticket-splitting was somehow 'against the rules' ... but this page explains that in most cases it is legitimate: **LINK**

https://www.telegraph.co.uk/money/consumer-affairs/fare-splitting-works-much-can-save-train-tickets/

MichaelG.

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