CNW J class Mikado

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Harold_V
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Re: CNW J class Mikado

Post by Harold_V » Wed Jul 31, 2019 1:25 am

In the interest of proper terminology, the material is silicon bronze, not silicone bronze.
Beautiful casting, by the way! Well done. :wink:

H
Wise people talk because they have something to say. Fools talk because they have to say something.

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FLtenwheeler
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Re: CNW J class Mikado

Post by FLtenwheeler » Wed Jul 31, 2019 7:19 am

Harold_V wrote:
Wed Jul 31, 2019 1:25 am
In the interest of proper terminology, the material is silicon bronze, not silicone bronze.
Beautiful casting, by the way! Well done. :wink:

H
You are correct Harold.

Just to let everyone know the cradle was investment cast.

It was expensive but I think it was cheaper than paying someone to make a pattern.

Tim
He who dies with the most unfinished projects: Should of put more time into their hobby.

Harold_V
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Re: CNW J class Mikado

Post by Harold_V » Wed Jul 31, 2019 3:52 pm

FLtenwheeler wrote:
Wed Jul 31, 2019 7:19 am

Just to let everyone know the cradle was investment cast.

It was expensive but I think it was cheaper than paying someone to make a pattern.
True, that, but the benefits are greater than that. An investment casting, barring a failure of the resulting mold, will have much better detail, offers a patina that is very acceptable, and will be far more accurately created than the typical sand casting. The chief reason that type of casting isn't more commonly used is the cost when compared to sand casting.

When I was in my apprenticeship, small magnesium investment castings (about 3" in size) were produced for the missile. They were complex housings for electronics, and were cast holding .005" tolerance. Try doing that with sand.

H
Wise people talk because they have something to say. Fools talk because they have to say something.

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FLtenwheeler
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Re: CNW J class Mikado

Post by FLtenwheeler » Thu Feb 13, 2020 5:09 pm

I received 2 sets of cylinder castings for the locomotive.
Attachments
3ABCADC5-ECD9-4725-8E97-A362AB6F1D3C.jpeg
He who dies with the most unfinished projects: Should of put more time into their hobby.

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NP317
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Re: CNW J class Mikado

Post by NP317 » Thu Feb 13, 2020 9:17 pm

Drool...
RussN

MsChrissi
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Re: CNW J class Mikado

Post by MsChrissi » Thu Feb 13, 2020 9:27 pm

Would love to see all the patterns for the cylinders.

Pontiacguy1
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Re: CNW J class Mikado

Post by Pontiacguy1 » Fri Feb 14, 2020 8:22 am

DANG those are pretty!

Harold_V
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Re: CNW J class Mikado

Post by Harold_V » Sun Feb 16, 2020 2:49 am

Pretty, indeed. :wink:

H
Wise people talk because they have something to say. Fools talk because they have to say something.

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