GrindoSonic
“Hidden defects” is a term that expresses our uncertainty about the outcome. If we are not aware of their seriousness, sooner or later we will end up having to prove the causes of damage, insufficient service life, or subsequent damage to health and property. This applies to many production methods, but especially to foundry and, more recently, to AM technologies. It is generally known that critical parts from investment casting must undergo HIP technology in order to eliminate or at least minimize this level of uncertainty. However, this is no longer the case for parts from 3D printing. It was not so long ago that the topic of HIP was ignored in AM technologies because there was simply no money for it, and so it needs to be circumvented somehow. That time is partly behind us, an example is Vibrom and its production using MIM technology with HIP support from Quintus, but other HIP devices are also increasing. But why am I writing about this? An offer for the GrindoSonic device from Foerster landed on my computer.
And how it works can be seen in this video:
While it won’t replace the certainty of HIP, in many cases it can help us detect what we can’t see with other methods. Or maybe all it takes is a good ear for music?
Jiří Stanislav
November 20, 2025
