Material Prep Is the New Frontier: How Resonant Mixing Solves AM's Hidden Bottleneck

As additive manufacturing moves from prototyping into serial production, a quiet revolution is happening in the upstream process that most people never think about: material preparation.

The Printer vs. The Powder

In my experience, LPBF printers are generally very consistent, says Dr. Peter Lucon, Chief Innovation Officer at Montana Mixers. At that stage the print parameters are fixed, but the measurement scatter increases, mechanical properties widen, and random print failures occur.

That variability often has less to do with the machine and more to do with the material going into it. When manufacturers encounter inconsistent results during repeatability testing, they tend to blame immature print parameters — but the real culprit is often upstream in the material preparation workflow.

Enter Resonant Mixing

Montana Mixers develops vertical resonant oscillatory mixers (VROM) that shake material vessels at 60 times per second with accelerations up to 100g. The technology is similar to shaking a sealed jar by hand, but dramatically faster and more controlled.

Unlike traditional tumble blenders or planetary mixers, resonant mixers are bladeless — eliminating a common source of contamination, wear debris, and difficult cleaning validation. But the key advantage is speed and consistency.

We can often batch process in minutes or seconds what may have taken hours with other methods, Lucon explains. Processes developed in R&D can transition to production volumes while maintaining the underlying physics and power density applied to the materials.

Why This Matters for Production

As AM moves toward serial production, material consistency becomes critical. Inconsistent materials produce parts with inconsistent mechanical and surface properties. That variability complicates qualification, documentation, and customer confidence.

The technology has already proven applications across pharmaceuticals, advanced battery materials, energetic materials, and aerospace — including development of new oxide dispersion-strengthened (ODS) alloys for aerospace applications.

The takeaway for manufacturers: if your prints are inconsistent despite calibrated parameters, the problem might not be your printer. It might be what you're feeding it.