Hi Ryan,in a word yes,you could just use a soldering iron,i used to play about a bit using a soldering iron many years ago when i was a nipper.We had a coal fire also,so i used to heat the poker in the fire until glowing red hot then i used to brand the logs stacked next to the fire,making pictures,it used to drive my mother nuts because it would fill the living room full of smoke
Oh the joys of youth
Cheers Stuart.