You should not have/do not want any kind of metallic taste. I assume that you had a very large (too large) red hot spot on the plate.Ive just tried again, the first two hits after a 5 second heat up is giving me light clouds and tastyness, the third hit im getting no vapor! 2 small thin hits and no more vapor, im trying to get vapor and heating it so much im starting to taste metal, i dont know what im doing wrong
Edit:Come to thinm of it, i got the same metal taste yesterday when the same vapor production problem occured, the taste lingers in the mouth for a while
1 What is the color of the herb after the 2nd hit? If it is dark brown then it's done.
2 If the herb color is still green then I would say to slow down your inhale speed. A full breath should take to the count of 10, which is a very slow inhale.