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soldering brass

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Roger Hulett	27/05/2019 16:41:45
131 forum posts 9 photos	I am beginning to assemble my brass,home made carburettor. I have faithfully copied the original. It is necessary to solder the parts together. However, some parts have to be soldered to other parts that have already been soldered. Is there a technique for keeping the old parts cool whilst heating up adjacent parts for soldering. The parts can not be soldered simultaneously.
Ian P	27/05/2019 17:05:34
2747 forum posts 123 photos	Usual method is to use two or more solders with different melting temperatures, (use the higher temp one first) Ian P
Jeff Dayman	27/05/2019 17:16:43
2356 forum posts 47 photos	You can use the old trick of wrapping the end you want to keep cool in a wet rag, or embed it in a cold raw potato. Sometimes just clamping on a hemostat or attaching a piece of copper sheet with an alligator clip will do. Good luck! Edited By Jeff Dayman on 27/05/2019 17:17:38
Roger Hulett	30/05/2019 15:46:12
131 forum posts 9 photos	Further to this topic, adjacent to the item being soldered there is a threaded section. Obviously I don't want to let the solder run into this area. Is there an anti flux,something that prevents the solder running into the threads..... Vaseline,grinding paste,butter, 3 in i oil ?
Former Member	30/05/2019 16:07:06
1329 forum posts	[This posting has been removed]
BC Prof	30/05/2019 16:25:57
182 forum posts 1 photos	If its silver solder I use either "lead" from a pencil of Tippex correction fluid . Never tried it for soft solder Brian C
John Billard 1	30/05/2019 18:01:53
111 forum posts	Tippex works for soft solder. John B

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