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Working With Precision Casting Professionals — FAQs

Frequently Asked Questions About Rapid Precision Castings Technology and Services

We help casting professionals and engineers produce precision investment castings for complex investment casting projects using advanced digital foundry technology. Our approach eliminates the tooling costs, long lead times, and multiple labor-intensive steps of traditional investment casting.

Through our proprietary LAMP™ (Large Area Maskless Photopolymerization) ceramic 3D printing and DirectPour™ end-to-end casting process, we take your project from CAD file to finished metal parts in as little as 10 days. Below, our dedicated team answers the most common questions about materials, processes, production, and capabilities for engineers and procurement teams.

LAMP™ Technology Questions

LAMP™ stands for Large Area Maskless Photopolymerization, our flagship ceramic 3D printing technology that produces investment casting molds directly from CAD files — with zero tooling required. The system cures a photosensitive ceramic shell slurry layer by layer using patterned UV light, producing highly accurate molds and integrated cores in a single digital step.

Unlike traditional lost wax or sand casting methods, which rely on multiple wax injection, coating, and assembly steps, LAMP™ goes directly from digital design to a pour-ready metal mold. This approach streamlines the investment casting process, reduces scrap, and ensures consistent quality for parts with complex geometries and tight tolerances.
Traditional investment casting involves 12 sequential steps: wax injection, coating in ceramic slurry, baking, and molten metal pouring. Each step adds cost, lead times, and potential defect sources. LAMP™ eliminates 7 of these 12 steps, removing the need for wax tooling and manual assembly.

The result is faster turnaround, lower scrap, and reliable precision casting. By reducing handling and assembly, LAMP™ improves surface finish and repeatability, which is critical for aerospace components, medical implants, industrial pump housings, and other critical applications. This technology supports rapid prototyping, low-volume production, and complex investment casting projects without sacrificing quality or tight tolerances.
Our production-scale LAMP™ system builds molds up to 600 × 600 × 600 mm (24" × 24" × 24") with layer thicknesses of 50–100 microns and a pixel resolution of 15 microns per beam. Positioning accuracy is ±2 microns. This capability enables high-precision metal parts for both prototyping and production runs.

For rapid prototyping, a smaller 10" × 10" × 12" platform allows testing, iteration, and evaluation of new designs without changing platforms. This flexibility supports complex geometries, tight tolerances, and other critical applications across aerospace, defense, medical, and power generation industries.
Parts that challenge traditional investment casting production — turbine airfoils, impellers, missile components, and structural aerospace castings — benefit most from LAMP™. By printing monolithic molds with integrated cores, assembly errors are eliminated, metal pouring is predictable, and consistent quality is maintained across production batches. Any part that previously required multiple casting steps or expensive tooling is ideal for LAMP™ technology.
Yes. Our LAMP™ ceramic 3D printing system can incorporate multiple ceramic compositions in a single mold when required for complex investment casting projects. This capability allows casting professionals to optimize metal pouring and thermal performance in different sections of a mold. By selectively tuning ceramic shell properties, we improve surface finish, reduce stress points, and ensure consistent quality across precision casting components, even for intricate critical applications like turbine parts or aerospace assemblies.
Through the combination of DirectPour™, digital mold fabrication, and tight process controls, we maintain consistent quality and tight tolerances across both prototypes and full-scale investment casting production. Every mold is printed with the same pixel-level accuracy and undergoes standardized post-processing. This ensures metal parts meet industry standards and reduces scrap rates, allowing casting professionals to rely on our process for both low-volume rapid prototyping and high-volume precision investment castings.

DirectPour™ Process Questions

DirectPour™ is our end-to-end precision casting service that converts CAD files into finished metal parts without tooling. The workflow includes:

  1. Receive CAD model and design a ceramic shell
  2. LAMP™ 3D printing of the mold with integrated cores
  3. Thermal post-processing (binder burnout and sintering)
  4. Molten metal pouring into the ceramic shell
  5. Finishing and inspection

This investment casting process supports both rapid prototyping and full production for complex investment casting projects in as little as 10 days — compared with 52–80 weeks using traditional methods.
Traditional lost wax casting requires 12 steps, including wax injection, slurry dipping, and multiple tooling stages. DirectPour™ reduces this to 5 steps, eliminating tooling, assembly risk, and labor-intensive processes. The result is faster, more cost-effective precision investment castings with tight tolerances, consistent quality, and fewer defect sources.
  • Zero tooling investment: no wax dies, cores, or tooling required
  • Integrated cores: internal features are printed directly into the mold
  • Faster timelines: first parts in as little as 10 days
  • Fewer process steps: reduces labor, scheduling, and complexity
  • Energy savings: up to 90% reduction in energy use
  • High-quality castings: reliable precision casting for critical applications in aerospace, defense, medical, and power generation
Yes. The same digital workflow scales from single prototypes to full production without changing tooling. Updates to CAD files can be applied at any stage, enabling rapid iteration and streamlining future production. This capability is valuable for casting professionals managing evolving designs and high-volume programs with tight tolerances and complex geometries.

Material & Alloy Questions

We produce investment castings in hundreds of alloys:

  • Stainless steels: 304, 316, 17-4 PH
  • Tool steels: M6735Y1003P6513tv=, 4140
  • Aluminum alloys: A356, A380
  • Nickel alloys: Inconel 625, 718
  • Cobalt chrome: ASTM F75 equivalent for medical

All castings comply with industry standards, meet tight tolerances, and fall within ASTM/ICI ranges, enabling direct integration into production and supply chain processes.
Alloy selection depends on part requirements, including temperature, mechanical strength, corrosion resistance, and post-processing needs. Nickel superalloys are suited for turbine blades and high-temperature components, while stainless and tool steels are ideal for structural aerospace or industrial components. Our engineering team works with casting professionals from the start to ensure material choice aligns with both performance and manufacturability.

Timeline & Pricing Questions

DirectPour™ can deliver first precision casting parts in as little as 10 days. Traditional investment casting production often takes 52–80 weeks due to tooling and sequential steps. Lead time varies with part complexity, alloy selection, and finishing requirements, but remains significantly faster than conventional methods.

By eliminating wax tooling, core tooling, and multi-step assembly, design changes can be applied digitally in hours. This enables rapid prototyping, production-scale precision investment castings, and complex investment casting projects without delays.

Yes. Tooling elimination, reduced labor, energy savings, and lower scrap reduce costs by approximately 50%. The approach is ideal for low-to-medium volume production and complex geometries where traditional tooling costs were previously prohibitive.

  • Materials: Vacuum-melt superalloys are more expensive than air-melt stainless or aluminum
  • Part complexity: Intricate metal parts require longer cycles
  • Quantity: Per-part cost decreases with higher volumes
  • Finishing requirements: Heat treating, CNC machining, plating, or non-destructive testing

Part size directly impacts the duration of investment casting production. Larger metal parts or molds with more intricate, complex geometries may require longer LAMP™ 3D printing cycles and extended thermal post-processing. Smaller components or simpler designs move through DirectPour™ faster, allowing casting professionals to receive first parts in fewer days. Regardless of size, our process maintains tight tolerances and consistent quality, ensuring even large critical applications are delivered reliably.

Yes. Secondary operations like heat treating, CNC machining, plating, or non-destructive testing can influence the final project cost and lead time. For precision investment castings in aerospace, defense, medical, or power generation, certain post-processing steps are often required to meet industry standards. By discussing finishing needs early in the project, casting professionals and engineers can optimize investment casting production for both speed and cost efficiency while maintaining high-quality metal parts.

Contact Rapid Precision Castings

Have questions about your investment casting project, alloy requirements, or production timeline? Our dedicated team of casting professionals is ready to help.

Rapid Precision Castings

Rapid Precision Castings

Get in Touch

Visit our contact us page

Email

support@rapidprecisioncastings.com

Phone

470-225-6987

Address

1876 Defoor Ave NW, Suite 3, Atlanta, GA 30318, USA

Learn more about our casting capabilities or request casting information to start your complex investment casting project today.

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