And what makes you think I might have had a 5% variation in alkali content? I told you I used the photo grade borax I got from PF. Is it that bad? Even the stuff I get by processing the household variety is better than 5%.

By the time the Mercury became a project, I had been assigned to do basic human factors research, and to design star charts to be used as backup reentry alignment. What did my education in AE have to do with that? It made me ask questions and search for answers. I no longer have the technical library I could access at Langley Research Center.

Kirk, there is no photo shop within 100 miles of here in any direction. My formulas are not only for my use, but have been used in remote locations in New Zealand. (Jacko Twist, where are you?)