Forget a repair cheap or expensive - just buy a new Iron - Amazon sell the Philips Azur for about £40 - a Which Best Buy
You do not mention the make and model of your iron or give any indication about what the special tool might be used for - a sensible answer is unlikely.
The general case is that for safety reasons irons are not repairable - and the manufacturers like it that way.
Good Luck...
March 2016