He gave it to you like that? It has flux all over. Put it in water over night to get rid of the flux. Remember it is mostly boric acid so don't touch it without washing your hands afterwards and take care
Well wipe it off and put it in the sun. But make sure you got vent holes. I design my frames with big ol' vent holes so water drains out easily. I don't believe you can keep water out completely so instead I invite it in and make sure it can leave again
He gave it to you like that? It has flux all over. Put it in water over night to get rid of the flux. Remember it is mostly boric acid so don't touch it without washing your hands afterwards and take care