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Smelting brass

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Roger Hulett	06/02/2017 16:46:45
131 forum posts 9 photos	John Flack..................................The petrol tank has a brass spigot onto which a brass petrol filler cap is screwed. I needed 6 of these and having completed them I silver soldered them into the tanks.Unfortunately my attention was distracted when I was soldering one of them and I managed to melt the brass. Having used up all of the brass tubing I had in that size,I thought I could cast just one. John Reese............................That does seem the obvious way but I am concerned at oxydisation. I will give it a try. Thanks to everyone for your comments.
not done it yet	06/02/2017 17:14:54
7517 forum posts 20 photos	Why brass? Why not use steel? I didn't think you needed both to be brass to avoid any chance of sparks?
Tim Stevens	06/02/2017 17:55:52
1779 forum posts 1 photos	One reason for using a brass fitting screwed to a brass filler could be to avoid any electrolytic corrosion caused by the interaction of two different metals. Another might be to match the existing, or the other five, mentioned by the OP. A third might be to retain some degree of originality, which really does matter to some of us. And then there is the different rates of expansion, not a good idea when any gap could cause a petrol leak just beneath the rider's tackle. Cheers, Tim

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