Thanks everyone. 250F will probably suffice. Sorry Jesse, even I am not daft enough to build a boiler from it. lol I am rebuilding a loco I made long ago, and am not happy with some of the work I did back then. I either have to remake many parts, in which case, starting from scratch would be easier, or patch up the worst of the blemishes, and cover it all with a coat of paint. In its favour, mechanically it is OK (having just had new bearings, bushes etc) and the boiler is fine, but cosmetically it is not so good. I decided to "bodge" and accept the facts that (a) my workmanship was not good then, and (b) it will never win any awards. It was always an excellent runner, and looks arent everything..... (Says he, trying to convince himself!) Alan ----- Original Message ----- From: "Jeff Dayman" <jeffdayman@xxxxxxxxxxxx> To: <modeleng@xxxxxxxxxxxxx> Sent: Thursday, May 28, 2009 10:07 PM Subject: [modeleng] Re: Heat proof body filler Loctite 'metal magic steel' epoxy two part putties will take up to 250 F. MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.