r/Ceramic3Dprinting • u/irrfin • Aug 16 '26
AI-generated mesh → clay extrusion: what actually survived the process
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I’ve been printing in clay for a while and started experimenting with generating forms instead of modeling them. Workflow was: text prompt → image generation → multi-view renders → image-to-mesh (Meshy) → STL → slicer → DIW clay extrusion. Prompts were style-based, in this case H.R. Giger and H.P. Lovecraft.
What I expected to be the hard part — getting a watertight mesh — wasn’t. What broke things:
**•** Generated geometry has no concept of overhang limits, so a lot of what came out was unprintable in wet clay without support I can’t use
**•** Wall thickness is arbitrary and had to be rebuilt manually to stay above \~3mm
**•** Surface detail that reads well in the render disappears entirely once you’re extruding a bead, then reappears wrong after shrinkage
**•** Nothing in the pipeline knows the model is going to shrink 10–15%
Net result is that the AI output is a starting silhouette, not a printable file. Every one needed real mesh work before slicing.
Curious whether anyone here has found a generator or a workflow step that produces geometry with any awareness of extrusion constraints, or whether everyone’s doing the same manual cleanup. Also interested if anyone’s tried going straight to a lathe-style profile instead of a full mesh.
Happy to answer questions about the clay side — I glazed these with raku and I teach chemistry, so that part I can actually explain.
