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How to Solvent Smooth FDM Parts

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The normal surface finish of FDM parts is suitable for most purposes, but in applications where a smoother surface is required, solvent smoothing is an alternative to sanding, filling, and mass finishing. Solvent smoothing utilizes a chemical agent to smooth a part’s surfaces (Figure 1). This process modifies the surface of FDM parts by eliminating layer lines while preserving feature detail and part accuracy. The smoothing agent can be applied either as a liquid or a vapor and it is quick and nearly labor-free. The finish achieved can mimic that of injection molded parts. This tutorial is courtesy of Stratasys.