'''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.
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'''Mar 19- 2 hours''' Today I insulated the rim of the tank with foam. After that I cut some 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.