3D-Printed Prototype vs. Rapid Injection Tooling
Compare direct-printed prototypes, machined prototype tools and printed mold inserts by the engineering decision your samples need to support.
Use a printed part for an early geometry check
A directly printed part can help review the outline, hand clearance or space for an assembly before tool design. Record the printing process and material if measurements are used. A printed sample cannot stand in for the intended resin, molding process or molded appearance unless evidence supports the comparison.
Use machined prototype tooling for a mold trial
A machined prototype tool supports checks on molded parts using the agreed material and trial conditions. Prioritize what you need to learn, such as assembly fit, cosmetic evidence or a measured feature. Define which conclusions should be checked again if the production mold or process changes.
Treat a printed mold insert as a separate tooling route
A printed polymer insert forms parts in an injection molding trial. Formlabs documents trade-offs in dimensional accuracy, cooling and durability under heat and pressure compared with a machined metal tool. Feasibility depends on the part, resin, tooling system and target checks. Confirm whether this route can be supplied for your project before planning around it.
Write the RFQ around a testable objective
Specify the question to answer, the model revision, the proposed material and the sample count. Ask the supplier to state the fabrication route, which tests the samples can support and any limitations. Include the intended next step if the samples pass.
RFQ checklist
- Decision to support and method for verifying it
- Current drawing revision and critical geometry
- Sample material and any required process match
- Sample quantity, approval criteria and next production step
Related applications
Technical references
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