Plan the finish before the first layer
A prototype’s appearance and fit depend on more than the initial print. Bring finishing requirements into the project conversation early.
Describe the result you want
Do you need a model for an internal fit check or a polished presentation piece? Identify the visible surfaces and provide a reference for the desired colour and texture. Words such as “smooth” can mean different things to different people.
Choose the features that matter most. A hidden internal face may need less cosmetic attention than a front panel, but it can still contain a critical mating feature.
Protect the important geometry
Discuss how finishing will affect edges, holes and close-fitting areas. A coating or material removal step should be considered alongside the dimensional requirements. Flag features that need extra care.
For an assembly, review the sequence. Some areas may be easier to finish before components are joined, while others may require a final appearance check after assembly.
Agree the finish in the scope
Confirm the intended finishing steps, the surfaces involved and how appearance will be reviewed. When the result is especially important, a sample or agreed reference can reduce ambiguity.
Do not use a finishing treatment as a substitute for selecting an appropriate material and design. The intended operating conditions still need to be addressed.
Bring this to your brief
Include a finish reference, mark visible and critical faces, and state whether the part is for presentation, fitting or functional evaluation.
Prepare a project briefFurther reading
Formlabs: Comparing printing workflows and finishAsk about this guide
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