alan2525
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Painting brass with High Temperature Stove PaintI've made the combustion chamber around the boiler on my external fired loco from Brass and wanted to paint it matt black.
I've got some stove paint -thats supposed to stand temperatures up to 1200 degrees F or 650 Celcius or something. The only problem, when I've painted brass in the past I've always used an etch primer to key the paint to the surface. Would I use the same etch primer with this paint? Or would that defeat the object of having the heat resisitant paint? I've abraded the surface of the brass with a rough abrasive paper and degreased it too.
Also would it benefit from being "cooked" in the over afterwards as I've heard this done before!
The paint I'm using is "Thermalox - Stove Paint - 270 Low Sheen Black"
Any Help is appreciated!
Alan
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tmuir
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Unless you have a high temp etch paint I would not etch as I'm guessing it will flake off.
Most high temp paint needs to be 'baked' to harden the paint, it usually says on the can.
If it doesn't let it dry then bake it for a couple of hours gradually increasing the temperature every 30 minutes up to 200C.
But sorry can't help you if it would stay on brass as I've never painted a brass part that gets hot enough to need high temp paint before. 
But would definately W&D and degrease it as you already have.
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xlchainsaw
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as tony posted dont use etch primer as it isnt heat resistant . slowly cure the paint. the paint will come off in time but as as its matt black its easy to touchup and no-one will ever know. 
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alan2525
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Thanks for the advice - I thought the same regarding the etching primer. I've put a fair few coats on the part on the wet and dried brass and i'll give it a cook in the oven once it's dried to hopefully cook it on!
The paint did go on nice though and leaves a lovely matt finish too.
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Wallace
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Alan, I am not sure what boiler it is, but be extremely careful in baking the paint on the boiler.
Depending on if it is soft soldered or not, the solder may melt
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xlchainsaw
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as wallace has indicated about "cooking paint" preheat your oven to 100 deg c and turn off ,then place your item in. this will cure the paint if left in to slowly go cold.
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