This tip is based on a recent experience in one of my current projects. It is about Autodesk® Moldflow® Insight and sink marks but not only on Moldflow it could be extrapoled to other software tools.
Some days ago one of my colleagues told me there won't be sink marks on a part he is currently designing because Moldflow says it.
Nice sentence!
We have to use Moldflow or any other software as a tool to help us to improve our designs, but the software itself is not able to say anything, and hopefully the computers are not smart enough to tell us things without our interaction.
Never use a single information as "The Truth". Ask people with more experience than you, go to the injection plant and ask the workers, they are injecting the parts you designed 8 hours a day (at least). So they know a lot about the possible problems your new design could have.
Coming back to my personal experience, I think the part will have sink marks, even the software "says" no. Other people with more experience than the designer and more experience than me, also thought there will be sink marks. So why to be more confident on a software than on some tenths of years of experience? To run a good simulation is not easy, if the software operator is not skilled enough, the results could be far of the reality, even if the operator has a lot of experience using the software we can have results not according to the real part. We have to use the results as a simulation of the reality, not the reality itself.
I have other bad experiences with Autodesk Moldflow Insight but I still think it is a very useful tool, if well used.
Remember use your brain, use your experience, use your colleague experience and use the tools but do not use only one of these.
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