Hi! You should be pretty safe with most solder - it usually (always?) it comes with flux inside it. If it says 'multicore' it definitely means it has flux in it.
I tend to use leaded solder, but it's mainly because that's what I had originally (and a normal roll of solder will last you for years). I think it tends to melt and wick in a bit more easily.
I'd suggest 0.8mm diameter - it's a nice to work with for smaller components. Try not to get anything much bigger than 1mm though.
Also I'd invest in a "solder sucker" - they're pretty cheap and are a nice way to remove excess solder if you put a bit much on.
Hope that helps! Let us know if you have any other questions!
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Hi! You should be pretty safe with most solder - it usually (always?) it comes with flux inside it. If it says 'multicore' it definitely means it has flux in it.
I tend to use leaded solder, but it's mainly because that's what I had originally (and a normal roll of solder will last you for years). I think it tends to melt and wick in a bit more easily.
I'd suggest 0.8mm diameter - it's a nice to work with for smaller components. Try not to get anything much bigger than 1mm though.
Also I'd invest in a "solder sucker" - they're pretty cheap and are a nice way to remove excess solder if you put a bit much on.
Hope that helps! Let us know if you have any other questions!