[modeleng] Re: Boiler blues
- From: "Jeff Dayman" <jeffdayman@xxxxxxxxxxxx>
- To: <modeleng@xxxxxxxxxxxxx>
- Date: Mon, 12 Sep 2005 08:15:06 -0400
Could try heating it with a propane torch to near red, and blowing welding
oxygen on it to burn it out.
Kind of harsh, but heat would only be momentary.
Cheers Jeff Dayman
----- Original Message -----
From: "Barrie Purslow" <bpduo@xxxxxxxxxxxxx>
To: "Model Engineering List" <modeleng@xxxxxxxxxxxxx>
Sent: Monday, September 12, 2005 7:20 AM
Subject: [modeleng] Boiler blues
> I am restoring a 5" Duchess the boiler of which is in generally good
condition. However the flue tubes, which are about 15/16 ins. I.D., are
coated internally with a layer of hard, black carbon. I have given it the
usual flue brush treatment which produced clouds of black dust but a hard
layer about 1/64 ins. thick remains.
> I have tried fitting the flue brush into an electric drill and giving the
tubes a few minutes of rotary action to little effect. I am wary about
trying anything more aggressive as I have heard quotes of over £2000 for a
replacement boiler.
> Any ideas anyone?
> Barrie Purslow
> Warrington UK
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