ron,
the part is a casting. nodular iron. bhn of 241-302.
i have pondered the density possibility, actually, it was one of the first avenues of pursuit i wanted to take. yes, it could be possible to narrow it down to a poor cavity at the foundry, or irregularities in the foundry's pour. the...
i work in an automotive production facility. there is a particular part that we machine completely, but are producing "flyers" with regard to a balance spec of .25 ounce/inch. the current rate is about 1.5%-2%. it is a round flange, splined, and has 8 tapped holes, and 2 location...
