If you wanna make some abstract artwork with complex geometry, and prefer a seamless surface, then we would strongly recommend you SLA 3D printing technology. Clay modeling could not make something precisely, and other technology would require stitching or assembling.
Solution
Step 1: Check the STL files, especially the depth of sunken lines. The client ordered a solid print so it would be heavy and have no vent hole.
Step 2: Arrange the parts in software and add necessary supports. Then 3D print them with SLA Generic Resin. The layer thickness we set is 0.05mm and we control the tolerance within ±0.1 mm.
Step 3: When printing is completed, rinse the models with IPA and post-cure them with UV. Cut off all the supports, then polish with sandpaper.
Step 4: As requested by the client, we spray the parts with specified hex colors. Then cover them with matte acrylic clear oil.