Originally Posted by
Dennis
The rings will move apart again when heated mainly due to expansion of the flux.
This can be overcome by forcing some pins into the block as stops.
If you leave a little surplus solder on the jump ring it will remelt when fluxed and heated, to connect to the larger ring.
Use a soft bushy flame mainly on the large ring and it will happen by conduction.
Work in subdued lighting to see where the heat is being applied.
Flux residue is easily removed in a bath of hot safety pickle or alum. This can be done in an open Pyrex dish, or a cheap slow cooker, for instance from Argos. Dennis.
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