'''Mar 19- 2 hours''' Today I insulated the rim of the tank with foam. After that I cut 30 light guides at 4 inches each and squared the ends with sandpaper. Then I straightened them by pouring hot water on them and then cool water while being tied to a straight piece of metal. | '''Mar 19- 2 hours''' Today I insulated the rim of the tank with foam. After that I cut 30 light guides at 4 inches each and squared the ends with sandpaper. Then I straightened them by pouring hot water on them and then cool water while being tied to a straight piece of metal. |