Tech Support Blog: Why are my BOM Quantities Wrong?

Thursday August 4, 2016 at 1:57pm None
Tech Support Blog: Why are my BOM Quantities Wrong

A support call cropped up this week which I thought was worth sharing in a blog post. Quite simply a customer was reviewing their Assembly Bill of Materials (BOM) and finding an incorrect value for the Quantity column against a certain part. Clearly this column should simply sum up the number of identical components found in the assembly and report the value- so how can this go wrong?

The answer here is that you can, on a part by part basis, set the quantity to report a different custom property. Take for example accounting for paint, oil, grease or any other supplementary product that you want to show on a BOM. It would be unlikely you want a numerical value showing an item count up, but rather an amount on for example, a volumetric basis- so therefore it may be appropriate to show 10 litres of paint- hence need the flexibility to change what the quantity reports.

So in order to do this in SOLIDWORKS, either deliberately or to correct a problem, you need to open the part (you can open parts directly from the BOM by right clicking the relative row). Then use File > Properties and change over to the Custom tab. You will see in the upper right corner a drop down menu titled "BOM Quantity"- this should ordinarily be set to "-None-" but can be altered to any other Custom Property found on that screen. So simply if the Quanity is wrong, set it to "-None-", if you want it to be a specific property, you can change this in the list.



Find our more about Bills of Materials in our Webcast archive

By Adam Hartles
Senior Applications Engineer

 Part of Solid Solutions Group

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