I have purchased a crossover platinum shank and round platinum rubover setting from cooksons simplicity range.
As well as soldering/welding together i need to resize smaller to a size J. My questions are 1. Should i weld or solder and if the latter which solder? 2. Should i resize after joining setting to shank?
Basically how do i go about tackling this? First time working in platinum so any advice would be greatly received.