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<blockquote data-quote="Hunyock" data-source="post: 7673284" data-attributes="member: 6779074"><p><strong>I tested in salt and on the table - surprising results</strong></p><p></p><p>Wow. Just, wow. I tested 27) d20's:</p><p>12 tested OK - no bias. These are a mix of new (<9 months old) and old (>25 years), various styles of dice. All the new ones are Chessex, who knows what the old brand were. Actually, one of the good ones was one that came with the D&D5e starter set, so yay. Also on the good list were the d20's from my old 70's/80's box sets, so triple yay!</p><p>6 tested bad - definite bias to one side, or an edge between two sides. All 6 of these are new (bought within the past 9 months), Chessex brand, "swirl" style dice, bought from the singles bin at my FLGS (bought as a single d20, and NOT part of a set).</p><p>9 were too heavy and couldn't be tested. These came from 2 camps: Either new Chessex "speckled" dice, or old (bought in the 80's/90's) dice (unsure what brand), some are single color solid, some are single color transparent.</p><p></p><p>For the salt water, I mixed salt into boiling water until no more salt would dissolve, then let it cool to room temperature to ensure as much salt was dissolved as possible.</p><p></p><p>OK, so the dice showed a bias floating in salt water, but "so what?" I wondered... so I picked one of the naughty dice and tested it by rolling it 101 times and recording the results. This particular die would always float up to the edge between the 4 and the 18 in salt water. The full results are below, but the 18 came up 12 times - showing a definite bias. So does it matter? Yeah, I think so. All the naughty dice have been corralled up, and I sure won't be buying any swirly style Chessex dice again. I was really surprised that the actual rolls matched up with the salt water test... now I'm suspicious of those dice that were too heavy to test... I hope their higher density would mean less bias from an inconsistent interior? Or the material is less susceptible to manufacturing defects?</p><p></p><p>Die Count</p><p>Roll of Roll</p><p>1 4</p><p>2 3</p><p>3 5</p><p>4 3</p><p>5 4</p><p>6 4</p><p>7 7</p><p>8 8</p><p>9 4</p><p>10 10</p><p>11 1</p><p>12 5</p><p>13 6</p><p>14 3</p><p>15 5</p><p>16 5</p><p>17 6</p><p>18 12</p><p>19 3</p><p>20 3</p></blockquote><p></p>
[QUOTE="Hunyock, post: 7673284, member: 6779074"] [b]I tested in salt and on the table - surprising results[/b] Wow. Just, wow. I tested 27) d20's: 12 tested OK - no bias. These are a mix of new (<9 months old) and old (>25 years), various styles of dice. All the new ones are Chessex, who knows what the old brand were. Actually, one of the good ones was one that came with the D&D5e starter set, so yay. Also on the good list were the d20's from my old 70's/80's box sets, so triple yay! 6 tested bad - definite bias to one side, or an edge between two sides. All 6 of these are new (bought within the past 9 months), Chessex brand, "swirl" style dice, bought from the singles bin at my FLGS (bought as a single d20, and NOT part of a set). 9 were too heavy and couldn't be tested. These came from 2 camps: Either new Chessex "speckled" dice, or old (bought in the 80's/90's) dice (unsure what brand), some are single color solid, some are single color transparent. For the salt water, I mixed salt into boiling water until no more salt would dissolve, then let it cool to room temperature to ensure as much salt was dissolved as possible. OK, so the dice showed a bias floating in salt water, but "so what?" I wondered... so I picked one of the naughty dice and tested it by rolling it 101 times and recording the results. This particular die would always float up to the edge between the 4 and the 18 in salt water. The full results are below, but the 18 came up 12 times - showing a definite bias. So does it matter? Yeah, I think so. All the naughty dice have been corralled up, and I sure won't be buying any swirly style Chessex dice again. I was really surprised that the actual rolls matched up with the salt water test... now I'm suspicious of those dice that were too heavy to test... I hope their higher density would mean less bias from an inconsistent interior? Or the material is less susceptible to manufacturing defects? Die Count Roll of Roll 1 4 2 3 3 5 4 3 5 4 6 4 7 7 8 8 9 4 10 10 11 1 12 5 13 6 14 3 15 5 16 5 17 6 18 12 19 3 20 3 [/QUOTE]
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