Problem: A customer wants to load his gas furnace today, but not burn out for two or more days. He is using Ethyl Silicate investment: Good Earth.

Solution: To keep the investment from drying due to the heat from pilot light, I instructed him to place the investment rings in a plastic bag with a damp paper towel. This will act as a humidor and the bag will burn out with the rings.

Submitted by Bud HansonBud Hanson