We do use lots. Lot numbers are assigned manually but to receipts and to jobs/manufactured items. Job number is eh lot number of the resultant product. Our lot numbers include a bit of intelligence: Rxxxx for raw materials, and xxxx-yy or xxxx-zz for two similar products that are different by only one dimensional difference.
[Non-text portions of this message have been removed]
[Non-text portions of this message have been removed]