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MetalCaster:
David-

I did not take notes on my brass pours, so I did not record the exact temperatures.

The estimated numbers I have for yellow brass are as follows:

melt: 1660-1710 F
pour: 1710-2150 F

I have just begun the casting journey, so perhaps those with more experience can give more exact numbers.

What I did is get the mix molten (above 1710 F) and then watch for white smoke as I heat towards 2000 F.
If I start getting noticeable white smoke, I stop and pour.

You may get some burning of the fumes when you open the furnace and the air hits the fumes, but it is not really a serioius problem, and not something you have to extinguish.
If you get flames, just go ahead and do your skimming, and the mix will cool and the fumes will stop burning fairly quickly.

Not a very accurate description, but that is what I do.
I do use a pyrometer for future reference, but I have yet to religiously begin recording casting data, but I will do that this year.

doubleboost:
Hi
I have had bad experiences with casting brass
The fumes given off from the zink are really bad for you
Personally I now only cast in bronze much safer and more forgiving than brass
John

MetalCaster:
I started having trouble with the fumes from all the metals, even when deliberately trying to avoid breathing them, along with the fumes from smoking petrobond oil.

I purchased a powered respirator with a long hose, and keep the compressor indoors.

I don't have fume problems anymore, but you do have to be very careful if you don't use a powered respirator.

tekfab:
I love you guys,  a trillion posts about casting and then right at the end "oh watch out for the fumes"   :nrocks:

Mike

doubleboost:
Hi
Mike
Not as bad as grinding some TIG Tungsten  :lol: :lol: :lol: :lol: :lol: :lol: :lol:
John

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