We set up our "formula" (base) parts to be based on 1 unit. So, in our case, if our "formula" looked like:
10% Mtl A
20% Mtl B
65% Mtl C
5% Adhesive
We configured the part's method as 1 pound (LB) units:
1 LB = 0.10 LB Mtl A
0.20 LB Mtl B
0.65 LB Mtl C
0.05 LB Adhesive
In our case, we went a step further. We would never make individual pounds of the product so we have the "formula" part configured as a Phantom BOM. So Part A's method would call for 1000 LBs of the "formula" part. When the job is created, the formula gets exploded out as follows:
Part A, 1 EA = 100 LB Mtl A
200 LB Mtl B
650 LB Mtl C
50 LB Adhesive
------
1000 LB
I hope I explained this OK and I hope it helps.
Bob Beaghan