Declaring Weightless Parts Using Assent's Materials Declaration Tool

No part is truly “weightless”. However, you may need to declare for a part with a value that can change depending on the size of the part.

Parts can have:

  • A fixed chemical composition, but variable weight, and/or
  • A variable chemical composition, but a fixed weight, and/or
  • A variable chemical composition and variable weight

“Size” is also a term that may have multiple meanings depending on the Product. For example:

  • A piece of wire will have the same materials, Bill of Materials, and chemical composition, but the length is variable and will dictate the size
  • Adhesive will have the same chemical composition, but the volume used will dictate the size

Generating an FMD for a Part with Variable Weight

Using “Resin” as an example of a “weightless part”, enter the “Resin” as the Product in the declaration and then follow the steps below to enter the Product Details:

  1. Enter “Resin” as the New Product Name:

  2. Click to expand the Product Details section for “Resin”

    The Item Name will be pre-filled. 

  3. Enter a Mass of “1.”

  4. Select the Unit of Measure in mg or g (defining to the smallest standard unit).

  5. Enter a Number of Instances of “1.”

  6. Enter the Instances Unit Type as “Each.”

    This will change depending on the Product or Sub-Product. For example, wire or cable will likely have an Instances Unit Type of “Meter.”

  7. In the Homogeneous Materials table, enter the substance information for “Resin”:

    When calculating the amount of “Resin” used in the overall Product, use the substance information (% of each substance) and multiply it by the quantity of “Resin” found in the Bill of Materials for that Product.

    Grams of Substance = g of Product x % of Substance/100
    For example, 1 x 70/100 = 0.7 g

  8. Complete the remaining declaration and generate the XML.



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