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EP 104 — Impac Systems Engineering's Justin Smart On Cutting The Weight From An Aerospace Part Without Losing Structural Performance

Written by Jon Forisha | Jun 23, 2026

Justin Smart has spent 30 years in additive manufacturing. Now at Impac Systems Engineering, he helps manufacturers adopt 3D printing for production-scale applications, including a continuous carbon fiber process that reduces an aerospace component's weight by 78% while matching the original's load capacity and vibration modulus.

Justin tells Dave how photopolymers went from sun-sensitive prototypes to engineering-grade plastics in five years, how metal printing costs dropped to a fifth of what they were, and what it actually takes to scale additive beyond prototyping.


Topics discussed:

  • Photopolymers going from sun-sensitive to engineering grade
  • Metal printing entry costs dropping fivefold in five years
  • Continuous carbon fiber forced through 3D printed parts
  • A weldment replacement at 78% less weight for space
  • Printing almost 13,000 small gears in one 12-hour build
  • Shipping containers converted into deployable drone factories
  • Workforce pipeline changes as 3D printing enters universities

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