The Ti-Pen™ titanium pen is the ideal glass signing tool for the lampworker, glass blower, scientific flameworker, or glass jewellery maker The titanium pen writes by friction of the metal point leaving behind a metal deposition in a silver colour of the surface of glass, quartz, ceramics, or vitreous enamels. Smooth flowing fine lines can be obtained by first moistening the surface. The titanium glass writing tool offers fine line permanent making (.25mm, .010 in. wide) which withstand temperatures up to 1500° C. Use of this tool will not scratch, damage or weaken the glass. Lines made by this tool may be electroplated to make circuits, etc.