Hi Jeanne,
Using co-parts as they are in Epicor right now, there is no way to report scrap on an individual co-part.
What you could do is to create two jobs (one for each part) and run them concurrent. The operator running the press would need to clock into each individual job which would split the labor and the burden equally.
You would need to figure out how much material is needed to produce each co-part. If you are using shot weight for the material, you could divide it in half unless you want a more accurate costing of material (then it would be part weight plus half of the runner weight).
You would need a third job to assemble the two parts together to make part C and you could report scrap against part C. If you need to scrap Parts A or B when assembling, then you would scrap the part as material scrap at that point.
I hope this makes sense.
Beth