Fused Deposition Modeling (FDM) is an additive manufacturing technology that builds functional prototypes and production parts layer-by-layer in engineering-grade thermoplastics.
Danko Arlington is a sand casting pattern shop and foundry in Baltimore, Maryland. Danko bought a Fortus 900mc 3D Production System from Stratasys three years ago to assist in constructing new patterns for their foundry.Since then, Danko’s understanding of Fused Deposition Modeling (FDM) Technology methods for pattern making has developed to the point where they no longer make patterns using traditional methods. That’s right: Danko Arlington now exclusively uses FDM parts for new foundry patterns.
The initial challenge that made FDM patternmaking a business necessity was the scarcity of patternmakers skilled in traditional methods in the U.S. But the switch comes with other benefits:
unlimited design options
the ability to incorporate variable fillets, locks, pins, and clearance
an efficient, semi-automated build process
less programming and setup
fast turnaround from CAD to physical pattern
Plus, the parts make great sales tools.
Check out Danko’s own video below to see how FDM fits into the patternmaking workflow: