solder iron

[Greg.]

If you need a new iron and would prefer to keep costs down, you can’t go far wrong with this timely offer, available from Sunday.

https://www.lidl.co.uk/p/parkside-so...tion/p10012555

As to the task, I suspect your technique may be the culprit. Remember to wet the iron with solder before applying heat to components. Loads of videos on YouTube and solder guides on Google.