me han sido muy util tus consejos, me gustaria tambien que mostraras como hacer esa boquilla de fuego giratoria en lugar de la parrilla , hace muchos años la vi de un herrero que tenia una fragua y algirar limpiaba
I've never used one so I have no first hand experience. I know they are used a lot in England and other countries where the winters are not as severe and where coke is the predominant fuel for forging. Coke is very different from soft coal. There was a video called - why side blast forges are best. You can search to see if that is still around.