If you were making a gauge glass protector, what material would you use? The old idea was to split a thin piece off some mica, as it was heatproof, and easily available in the days when most stoves used it for their windows. I doubt that it is available now, or if so, not easy to find. What are the alternatives? Alan Stepney http://www.alanstepney.info Model Engineering & steam engine information pages MODEL ENGINEERING DISCUSSION LIST. To UNSUBSCRIBE from this list, send a blank email to, modeleng-request@xxxxxxxxxxxxx with the word "unsubscribe" in the subject line.