Aurarius is quite correct of course but personally I think it would be more fun to do when you get back from the pub LOL
Do be careful not to set the house alight though......
Personally I like to use gravity and balance the settings on top of the shank rather than fix in any way but they do often move as the solder flows- I adjust them at this point with the solder pick.
Not saying this is right, just what works ok for me.
Don't forget to re do the flux if you try to melt the solder.
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