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3D sand mold printing for foundry castings
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Prototype

3D Sand Molding

Binder-jet 3D printed sand molds — no pattern tooling, no lead time for tooling fabrication, first casting in days.

None

Tooling Required

Days

First Casting

Unlimited

Core Complexity

Our Process

Pattern-Free Casting for Prototypes & Complex Geometry

3D sand molding uses binder-jet printing to produce complete sand molds and cores directly from your CAD file — no physical pattern required. The printed sand mold is assembled at our foundry and poured using the same alloys, furnaces, and heat certifications as our conventional production work.

The primary applications are prototype castings, first articles, short production runs, and complex internal geometry that is difficult or impossible to core conventionally. Send us your CAD model and alloy specification and our engineers will design the risering and gating system and coordinate the mold print.

3D printed sand mold at Ironbound Castings

Lead Time Advantage

Eliminate pattern fabrication lead time — prototype castings poured in days from your approved CAD model

Advantages

Why 3D Sand Molding?

No Pattern Tooling Required

3D printed sand molds are produced directly from CAD files — no wood or resin pattern needed. Eliminate pattern lead time and tooling cost entirely for prototype and short-run work.

Complex Internal Geometry

Binder-jet printing can produce mold cores that are impossible to make conventionally — intricate oil passages, undercuts, and compound internal shapes with no assembly required.

Rapid Prototype Delivery

First casting in days rather than weeks. 3D sand printing removes the longest lead time item — pattern fabrication — from the critical path.

Any Alloy We Pour

3D-printed sand molds are compatible with all alloys Ironbound pours — bronze, aluminum, nickel alloys, Monel, and stainless steel.

Specifications

Technical Specifications

ProcessBinder jet 3D printing of furan-bonded silica sand molds and cores
Mold sourceMolds printed by qualified 3D sand printing supplier from customer-supplied CAD
Lead time advantagePrototype castings delivered in days — no pattern fabrication delay
Weight rangeFractions of a pound to large one-off castings
TolerancesComparable to conventional no-bake sand; tighter achievable with machining
Core complexityEssentially unlimited — complex internal passages, undercuts, and compound shapes

Ready to Cast Your Prototype?

Send us your CAD file and alloy specification. Our engineers will review the design and provide a quote and schedule for your first casting.

(973) 589-7575 — Ironbound Castings, Newark, NJ

Other Molding Processes

No Bake Molding

No Bake Molding

View process details
Green Sand Molding

Green Sand Molding

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Prototyping

Prototyping

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Ironbound Castings

Full-Service Foundry

(973) 589-7575Newark, NJ

Full-service foundry specializing in Bronze, Aluminum, Stainless Steel & Nickel Alloy sand castings with complete pattern shop, machining, and inspection capabilities.

Alloys Poured

  • Bronze Alloys
  • Aluminum Alloys
  • Nickel Alloys
  • Monel Alloys

Capabilities

  • Molding
  • Pattern Making
  • Heat Treating
  • Prototyping
  • Machining
  • Inspection & Certification

Industries Served

  • U.S. Navy & Defense
  • Oil & Gas
  • Power Generation
  • Industrial Manufacturing

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