Chrome tanned leather toxicity level.

[luckystudio13]

How much heat before it cause toxic fumes being released into the air from chrome tanned leather ? I know it is a no no  to use laser on any chrome tanned leather as it releases toxic chromium fumes into the air. I am concerned about using high heat on electric and fire-hot creaser and edgers on it as well.

[nstarleather]

In my experience, I don’t smell anything or have any burning at anything under 500, but obviously I’ve not done tests.