[modeleng] Re: Nameplate niggles

What is this "thermite" casting please Patrick? Whilst Tel is our foundry 
man, and has made many name plates and such like, in his absence his 
technique is to make a small wooden board, fit plastic letters to suit, and 
bed this face down into a bed of damp sand. After the board (pattern) is 
removed and the sand dried out then it is an easy matter to fill it with 
molten lead, though he uses aluminium.

I do a lot of lead casting, incidentally, as you are aware, hence my comment 
on casting a name plate in it, but such as Chronos also sell various low 
melting temperature (bismuth?) based alloys, for model figurines and such 
like. Some of these alloys can be melted just with boiling water, and have 
excellent low cooling shrinkage rates, so would seem to be ideal for any 
personalised name plate, though as I say, they have a range and so some of 
their other alloys have higher melting points, just in case the anme plate 
ever gets hits with steam!

Tony.


----- Original Message ----- 
From: "Patrick Coppens-Marian Lynch" <develop@xxxxxxxxx>
To: <modeleng@xxxxxxxxxxxxx>
Sent: Monday, August 20, 2007 6:25 PM
Subject: [modeleng] Re: Nameplate niggles


>
> Did you ever consider thermite casting?
> It is something that can be done on a very small scale, and is not so
> difficult, nor do you need fancy equipment.
> I have done it twice in the past, for small parts and it worked very well.
> You can make your nameplate in wax, so you can use the 'Cire perdu'
> method (that is posh for waist-wax)
> and have very crisp castings, with high definition..
>
> Cheers
> Patrick
>
>
> R.L. Roebuck wrote:
>
>>Hi there All,
>>
>>I'm after some nameplates for a Rob Roy I'm working on. I'm not after a
>>personalised name for it, just want them to say "Rob Roy".
>>
SNIP


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