EBay madness

[PhilJ W]

11 hours ago, Compound2632 said:

 

A quick bit of insomniacal googling demonstrates that "mazak" is a term known only to British railway modellers; the usual name for this family of alloys is "zamak". It seems that "Mazak" was formerly a trade name but when and by whom is obscure; it is now the name of a Japanese brand of machine tools, with a factory in Worcester. Zamak, on the other hand, is also the word for "castle" in a number of Slavonic languages.

IIRC Mazak (or Zamak) is an alloy of Zinc and Magnesium with a few other metals sometimes included. It is the proportions of some of these metals that can lead to Mazak rot. 

[MrWolf]

I was always told when I was involved in engineering, that mazak rot was caused by impurity in the mix, which is why major users had got on top of the problem in the 1940s, of course, there's always mistakes, sourcing / traceability or QA issues and the old problem of: "There is nothing a man can make that another man cannot make a little cheaper and a little less well."

 

https://en.m.wikipedia.org/wiki/Zamak

 

 

[Michael Hodgson]

6 hours ago, Paul H Vigor said:

So, the GWR could have added Zamak Castle to the 4073 class? 🥸

I thought that was one Hornby did ?

[Hroth]

6 minutes ago, Michael Hodgson said:

I thought that was one Hornby did ?

 

You'd have to examine the "Mazak Rot" list elsewhere in RMweb. However, I might rename my R2880 9F "Zamak Castle" and renumber it as one of the Swindon built 9Fs.....

Edited November 24, 2022 by Hroth
Spotted a mistype as I hit Submit...

[6990WitherslackHall]

6 hours ago, Paul H Vigor said:

So, the GWR could have added Zamak Castle to the 4073 class? 🥸

It's name would be Castle Castle then. 

[Paul H Vigor]

11 minutes ago, 6990WitherslackHall said:

It's name would be Castle Castle then. 

Yes. With a Cornish twist!

https://sh.wikipedia.org/wiki/Zamak_Tintagel

[Corbs]

2 hours ago, MrWolf said:

I was always told when I was involved in engineering, that mazak rot was caused by impurity in the mix, which is why major users had got on top of the problem in the 1940s, of course, there's always mistakes, sourcing / traceability or QA issues and the old problem of: "There is nothing a man can make that another man cannot make a little cheaper and a little less well."

 

https://en.m.wikipedia.org/wiki/Zamak

 

 

 

Someone told me that even just leaving the wire wrapping on the zinc when you throw it into the melting pot can lead to Mazak rot.

 

 

14 minutes ago, 6990WitherslackHall said:

It's name would be Castle Castle then. 

Ahhh just like River Avon?

[Paul H Vigor]

25 minutes ago, Corbs said:

 

Someone told me that even just leaving the wire wrapping on the zinc when you throw it into the melting pot can lead to Mazak rot.

 

 

Ahhh just like River Avon?

Yes indeed! 😎

[TimberValleyRailway]

Amazon are mad.

 

 

[John Besley]

Looks like TMC have jumped onto the scrap line as well... £78.00 

 

Looks like something from Harrow and Wealdstone October 1952

 

[MrWolf]

Is that rust scabs or some previously unknown form of locomotive leprosy?

[Paul H Vigor]

8 minutes ago, MrWolf said:

Is that rust scabs or some previously unknown form of locomotive leprosy?

Looks like it's contracted some kind of nasty LTI??

[96701]

5 hours ago, Corbs said:

 

Someone told me that even just leaving the wire wrapping on the zinc when you throw it into the melting pot can lead to Mazak rot.

 

 

Ahhh just like River Avon?

Also River Ouse and Lake Windermere.

[Hroth]

6 hours ago, Corbs said:

Ahhh just like River Avon?

 

33 minutes ago, 96701 said:

Also River Ouse and Lake Windermere.

 

Torpenhow too...

 

As for Mazak rot

 

6 hours ago, Corbs said:

Someone told me that even just leaving the wire wrapping on the zinc when you throw it into the melting pot can lead to Mazak rot.

 

I understand that was found to be the root of the problem when Meccano had their outbreak of the Rot.

 

(Mind you, I "understand" a lot of things, that might not be entirely factual...  🤪)

[MrWolf]

That would definitely create impurities, particularly if it was soft iron wire even though it wouldn't melt at alloy temperatures and of course be scooped out as slag.

[96701]

 

[Bucoops]

"Optimistic" comes to mind https://www.ebay.co.uk/itm/314241141012 that's the polite version anyway.

[kevinlms]

11 hours ago, John Besley said:

Looks like TMC have jumped onto the scrap line as well... £78.00 

 

Looks like something from Harrow and Wealdstone October 1952

 

You mean it doesn't come with it's box - not interested, then!

[John M Upton]

1 hour ago, Bucoops said:

"Optimistic" comes to mind https://www.ebay.co.uk/itm/314241141012 that's the polite version anyway.

 

Espcially as the original sale price (£40.00) is still clearly displayed on the packaging...

Edited November 25, 2022 by John M Upton

[6990WitherslackHall]

14 hours ago, TimberValleyRailway said:

Amazon are mad.

 

 

That's a strange looking pannier tank. 

[John Besley]

3 hours ago, Bucoops said:

"Optimistic" comes to mind https://www.ebay.co.uk/itm/314241141012 that's the polite version anyway.

 

Interesting seeing as it was originally £40.00 when where they produced?

[Hroth]

15 hours ago, TimberValleyRailway said:

Amazon are mad.

 

 

 

1 hour ago, 6990WitherslackHall said:

That's a strange looking pannier tank. 

 

Its in Improved Engine Green too...

 

Must be a Terrier!

 

 

Edited November 25, 2022 by Hroth
An extra thort

[Michael Hodgson]

1 hour ago, Hroth said:

 

 

Its in Improved Engine Green too...

 

Must be a Terrier!

 

 

 

That doesn't look like an improved engine.

[5944]

22 hours ago, PhilJ W said:

IIRC Mazak (or Zamak) is an alloy of Zinc and Magnesium with a few other metals sometimes included. It is the proportions of some of these metals that can lead to Mazak rot. 

It's described in other countries (or at least Google translate interprets as such) as zinc pest.

[MrWolf]

I prefer Monkey Metal Malaise...