Knowledge base
How to check before release.
No theory, but how it goes in practice: what to look at on a drawing, how to put a BOM next to the model and what does and does not come along in a STEP. Written by Frank de Gier, mechanical engineer.
01 All topics
Practical guidance.
- Release · 7 min Checklist: checking a drawing before release The order in which I go through a drawing, from title block to match with the model.
- BOM · 6 min Comparing a BOM with the 3D model Matching line by line: on part number, not on description. And what to do with indented lists.
- Drawing · 5 min What belongs in the title block of a drawing? The fields that always belong in it, why you link them and which errors linger.
- BOM · 5 min EBOM and MBOM: the difference in practice The engineering BOM follows the model, the manufacturing BOM follows the workshop. Why they differ.
- Exchange · 5 min What is a STEP file and which version do you choose? What is and is not in a STEP, and why AP214 or AP242 is the safe choice.
02 Mistake catalogue
And what goes wrong.
One page per mistake: what it is, how it comes about, how to find it and how to prevent it.
- Duplicate placed parts Two instances in exactly the same spot: invisible in 3D, one line too many on the BOM.
- Floating parts A part touches nothing. Misplaced, or a gasket is missing on the BOM.
- No or default material Generic, Default or empty: without a real material the weight is wrong and purchasing cannot do anything with it.
- BOM against model Quantities drift apart, lines are missing or appear twice. Compare model and list line by line.
From checklist to a check that runs by itself.
BOMproof does this work at every release: model, drawing and BOM against each other, with every comment pointed out. Book a demo with your own design.