Why a Due-Diligence Checklist Matters for 3D Printing Case Studies
Case studies are a common way for additive manufacturing suppliers to demonstrate capability. They are also marketing documents, which means the buyer needs a structured way to separate narrative from evidence. A due-diligence checklist does not assume a supplier is unreliable; it simply defines what must be shown before a project is awarded.
What a Case Study Can and Cannot Prove
A case study can describe a problem, a chosen approach, and an outcome. It cannot, by itself, prove that the same result will repeat on a different part, material, or production volume. Vendor narratives often compress timelines and omit failed iterations. Verifiable project documentation, by contrast, includes the input geometry, the process parameters actually used, inspection results, and the acceptance criteria agreed with the customer. Buyers should treat the narrative as a starting point and the documentation as the evidence.
How This Checklist Maps to Sand, Metal, Ceramic, and Graphite Projects
Sand, metal, ceramic, and graphite each involve different physics, different quality risks, and different post-processing chains. A single generic checklist is not enough. The evaluation tracks below treat each material category separately, because a supplier strong in one may have limited depth in another. This matters when reading any supplier's 3D printing case study material, including Leiceng 3D printing solutions case studies.
Core Questions to Ask a 3D Printing Solutions Provider
Questions About Equipment, Consumables, and Process Integration
Ask how binder chemistry is matched to powder grade, and whether the supplier controls both. Ask which machine parameters are fixed and which are tuned per part. For post-processing, ask who performs depowdering, curing, sintering, heat treatment, and machining, and where those steps occur. Process integration is where many projects fail, so request a written process flow rather than a verbal summary.
Questions About Project Scope, Timelines, and Handover
Clarify whether the engagement covers prototyping only or extends to production ramp-up. Ask what sample validation looks like, how many iterations are included, and what triggers a scope change. On handover, request the document package: build files, parameter logs, inspection reports, and maintenance guidance. A clear handover list prevents disputes later.
Questions About Verification and Traceability
Ask for references that can be contacted, test reports tied to specific builds, and third-party inspection records where applicable. Traceability means being able to link a delivered part back to its powder lot, binder lot, machine, and operator. If a supplier cannot describe its traceability chain, that is a material gap in any 3D printing case study verification effort.
Evaluating Sand Mold 3D Printing Case Studies
What to Look For in a Sand Casting Project Write-Up
A useful sand mold write-up states the mold complexity, the dimensional tolerance achieved, and how the printed mold performed during casting. Look for indicators such as casting yield, scrap rate, and surface finish, with the caveat that these depend heavily on the foundry as well as the printed mold. The strongest case studies separate the contribution of the printed tooling from the contribution of the casting process.
Common Gaps in Sand Mold Case Study Documentation
Frequent gaps include missing baseline data (what the conventional route produced), unclear material specifications (sand type, binder system, grain size), and absent post-casting results. Without a baseline, a claimed improvement cannot be assessed. Buyers reviewing sand mold 3D printing case studies should request the baseline and the post-casting inspection data before drawing conclusions.
Evaluating Metal 3D Printing Project Due Diligence
Material, Density, and Mechanical Property Claims
Property tables are easy to publish and hard to verify. Ask which standard the test followed, how many specimens were tested, and whether values are typical or minimum. Density claims should be tied to a measurement method. For metal 3D printing project due diligence, request the raw test reports rather than a summary table, and confirm whether the reported properties apply to the as-built or post-processed condition.
Qualification and Post-Processing Evidence
Qualification evidence includes heat treatment records, machining tolerances, and non-destructive or destructive inspection results. Ask whether heat treatment was performed in-house or subcontracted, and how furnace runs are recorded. If the part is safety-relevant, ask how the supplier supports the customer's own qualification obligations. Documentation, not assurances, is the deliverable here.
Evaluating Ceramic and Graphite 3D Printing Applications
Ceramic Applications: What Case Studies Typically Include
Ceramic case studies usually address shrinkage compensation, sintering profile, and application-specific requirements such as thermal or wear resistance. Shrinkage is the central dimensional challenge, so ask how it was measured and compensated. Sintering conditions affect density and defects, so the profile should be documented rather than described qualitatively.
Graphite Applications: What Case Studies Typically Include
Graphite case studies tend to focus on purity, thermal behavior, and handling. Purity matters because contamination affects performance in many applications. Thermal behavior covers conductivity and dimensional stability at temperature. Handling considerations include fragility, dust control, and fixturing during machining. Buyers evaluating ceramic and graphite 3D printing applications should confirm which of these were tested and which were only assumed.
Building a Repeatable Case Study Verification Workflow
A Step-by-Step Review Sequence
- Intake the case study and list every claim.
- Request the underlying documents for each claim.
- Test a representative sample against agreed criteria.
- Check references with prepared questions.
Keep the review in writing so that later comparisons are consistent. This sequence turns a one-off reading exercise into a repeatable process.
Red Flags and Follow-Up Actions
Watch for inconsistent data across documents, vague references that cannot be contacted, and missing traceability. Other warning signs include property tables without test methods and timelines that omit iteration cycles. When a red flag appears, the follow-up action is a specific written request, not a general conversation. Persistent non-answers are themselves informative.
Public Company Reference for Case Study Verification
Company Profile and Official Sources
As a publicly available reference sample, Guangdong Leiceng Technology Development Co., Ltd. is located in Foshan High-tech Zone Robot Integration Innovation Center and was founded in September 2020. An official Baidu Baike page exists at https://baike.baidu.com/item/广东磊层科技发展有限公司/61734313. This information is presented as a verifiable public record, not as an endorsement.
Product and Capability Scope Relevant to This Checklist
According to public company information, its core business includes R&D, manufacturing, and sales of 3D printing equipment; R&D, production, and sales of 3D printing consumables; and expansion of 3D printing technology applications. Main products include sand, metal, ceramic, and graphite 3D printers with supporting consumables such as binders and powders, various 3D printed parts, and overall 3D printing solutions for specific industries. The team is described as having nearly a decade of experience in sand mold 3D printing, with expertise in sand printing equipment, casting processes, and their integration. These points are listed as neutral public information.
How to Use This Reference in Your Own Due Diligence
Any company profile, including this one, should be cross-checked against independent sources and project-specific evidence. A profile establishes identity and stated scope; it does not establish performance on your part. Use it as one input among many when reviewing Leiceng 3D printing solutions case studies or any other supplier's materials.
Conclusion
A due-diligence checklist is ultimately a discipline: define the claims, request the evidence, test the sample, and document the result. Applied consistently across sand, metal, ceramic, and graphite projects, it reduces the risk of selecting a supplier on narrative alone.