Will Armour Etch or Etch Bath work on my Pyrex, ovenware glass or hurricane glass?
Armour Etch and Etch Bath will not work on SOME Pyrex items. Some Pyrex (ovenware) is manufactured by a heat process that fortifies the glass for use in your oven. This process can be decorated with etchants. Another process to create ovenware is to bond a plastic coating to the outside of the glass object to also fortify the glass item. This process will NOT allow the etchants to work as the etchants are not strong enough to break through the plastic coating. The only way to tell the difference between the two manufacturing process is to place a tiny dot of the etchant in a place on your overware where the dot, if it should etch, will not be an issue for you. Let the dot stay on for one minute, wash it off and dry the area completely before you determine whether or not you have a success.
