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Post by chameleonrob on May 9, 2009 18:56:27 GMT
hi all
just a quick question are stainless screws acceptable in a copper boiler if 20 or so are used to hold the plates for soldering and left in place, note that they aren't load bearing, they just need to stay put.
rob
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Post by alanstepney on May 9, 2009 19:37:23 GMT
I'm not sure if there is a definitive ruling on this, but personally, I wouldnt use them.
I would prefer copper or bronze screws, or rivets, or just clamp the plates together whilst soldering them.
Others may have different views, or know if there is a specific rule about using SS screws.
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Post by Shawki Shlemon on May 10, 2009 9:30:23 GMT
In OZ rules we can use stainless steel screws to fit items on the boiler but not permanently silver soldered in. I agree with Alan if they are not bearing any load why use stainless when one can use bronze or copper , even better use copper rivets loosely fitted and silver solder will flow though and seal them.
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Post by chameleonrob on May 12, 2009 8:31:31 GMT
thanks for the replies, I will have a think about their use on boilers. I will use them if I can't get hold of some copper or bronze screws as I think that screws are easier than rivets. If I use them and they fail the worst that will happen is a jet of steam.
rob
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Post by alanstepney on May 12, 2009 9:49:54 GMT
Sorry but, no, the worst than can happen is that you get a scrap boilers, and waste a lot of time (and money) on building it, and its replacement.
Personally, I would rather do it right in the first place.
You can easily make copper screws or rivets, the latter only taking minutes to make if you set up for it. (Oh, and make some spares, they will come on useful in the future.)
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