Black Sharpie Pen

Black Sharpie Pen for Marking Glass (Fine Tip)

Clearly mark your glass for accurate cuts with this black permanent marker.  This pen can be used for marking your glass but if you are working with water-fed power tools we recommend covering the ink with Vaseline to help protect it from washing off due to the volume of water used by these machines.

Simply clean off with glass cleaner or isopropyl alcohol before firing.