Test plan · Generators
AI 3D Creatures and Tabletop Miniatures: One Model, Game and Print Checks
Judge one AI-generated creature for both game use and resin printing: documented workflows, license limits on selling prints, and a pass/fail protocol.
A creature built for a game and a creature built for a printer fail in different ways, and the guides we read tend to cover only one. This page, part of the test protocols, defines checks for using the same model both ways: in an engine, and through a slicer to a resin or FDM print. It also flags that the right to sell prints can depend on your plan.
Two destinations, two sets of failures
For a game, a creature must have a readable silhouette and, if animated, a pose that can be rigged (non-humanoid rigging). For a print it must be a closed solid with wall thickness the printer can reproduce, features not thinner than the printer’s minimum, and a pose that supports itself or can be supported. Thin wings, tentacles and spear shafts (prompts K03, K04, K05) are the usual casualties.
The checkable numbers come from your printer and resin documentation, not from the AI tool: minimum feature size, minimum wall thickness, and layer height. There is no universal figure, so look yours up and write it in the log.
Thresholds from two printer makers’ documentation
These are the only official figures we have read; they apply to the stated printer and setup, and your resin may differ. The Formlabs rows are resin (SLA) figures from one printer and material; they do not transfer to FDM, which is why the last row comes from a separate FDM source.
| Check | Figure | Source and scope |
|---|---|---|
| Minimum wall, supported or unsupported | 0.2 mm | Formlabs Form 3, Clear Resin, 100 micron layers; at 0.2 mm or less walls “may warp” |
| Minimum drain hole for an enclosed cavity | 2.5 mm | Same page; without drain holes, trapped resin or air can cause a “cupping blowout” |
| Maximum unsupported horizontal overhang | 5.0 mm, and not shallower than 10 degrees from level | Same page |
| Minimum embossed / engraved detail | 0.1 mm / 0.15 mm | Same page; smaller raised detail may not appear, smaller recesses may fuse |
| Minimum gap between separate parts | 0.5 mm | Same page; smaller gaps may fuse |
| FDM perimeter width at a 0.4 mm nozzle | about 0.45 mm extrusion width per perimeter in PrusaSlicer for the stock 0.4 mm nozzle on an MK3S; walls thinner than one perimeter are not printable | Prusa Knowledge Base, “Modeling with 3D printing in mind” (undated; the page calls its values approximations) |
What this means for a creature: a wing membrane, a tentacle tip or a spear shaft thinner than your printer’s wall minimum is a fail before any print, and a hollowed figure with no drain hole is a cupping risk. Formlabs’ PreForm hollowing guide says to place at least one drain hole as close to the build platform as possible and to check Print Validation for cups. Its worked example (2 mm wall, 0.1 mm layers, Form 4, White Resin V5) cut resin volume by about 77%; that is one example, not a typical saving. Other brands’ minimums (Chitubox, Lychee, Elegoo, Anycubic, Bambu) were not available to us, so enter your own.
What a published workflow says
3D AI Studio’s July 7, 2026 guide describes a resin workflow using Hitem3D 2.1 on its own platform: texturing off, polygon count at the 2,000,000 maximum, 28 to 75 mm figure sizes, layer heights of 0.05 mm for tabletop figures (0.03 and 0.02 mm for display and competition work), 0.3 mm support tips, hollowing skipped below 50 mm, and splitting character figures into 2 to 6 parts. It reports about 7 to 8 minutes per generation and under 30 credits per figure for geometry-only generation. These are the publisher’s recommendations. The guide shows no printed results or photographs (its only image is a model thumbnail), covers one model offered on the publisher’s platform, and the publisher sells credits. Treat it as a starting set of slicer settings to verify, not as a result.
Meshy’s API pricing lists print-related operations: Multi-Color Print (10 credits), Repair Printability (10) and Auto Split (10). That tells you printing tools exist and cost credits; it does not tell you how often they succeed.
Check the rights before you sell a print
Sloyd’s Terms of Use (last updated 16 February 2026) state that 3D printing is allowed for personal use only, with commercial printing needing a custom license, while Sloyd’s FAQ page (read 2026-11-08) says “Sloyd Plus and Sloyd Pro include a commercial license, so you can sell 3D prints of models you generate, royalty-free.” The two pages conflict; ask Sloyd in writing. Other vendors differ and some free tiers carry attribution or ownership conditions. Read selling 3D prints of AI-generated models and check your plan before you offer miniatures for sale. This is not legal advice.
Protocol
- Generate K01 to K05 from the standard set per tool; log plan and model version.
- Run the metrics script from the prompt set page (it is labeled untested there). Record loose_pieces, open_edges and nonmanifold_edges. For the game check, import and look from three distances.
- For the print check, scale the model to your target height (record it), run it through your slicer, and note every automatic repair, thin-wall warning and unsupported overhang. Methods for fixes are in fixing AI models for the slicer.
- If you have a printer, print the model and record the outcome as success, partial or fail with the cause. Without a printer, the slicer result is the most you can claim, and should be labeled that way.
Fields: target_height_mm, min_wall_mm (measured in the slicer), thin_features (list), repairs_needed, supports_needed (yes/no), print_outcome (not printed / success / partial / fail), game_gate (pass/fail), cleanup_minutes_game, cleanup_minutes_print.
Ambiguous results
Rules to set before you start, for borderline readings; they are editorial, not outcomes we have seen.
- Wall reads near the minimum (within 0.1 mm of your figure, a margin we suggest, not a printer figure): treat as fail for display pieces and as “partial” only if you print a test and it survives washing and curing.
- Slicer repairs silently: count the repair as a step. If the repair changed a feature you care about (a horn, a finger), compare before and after in the slicer view and record it as thin_feature lost.
- No printer: report “slicer pass, unprinted”. Do not write “printable”.
- Splits: if a model only passes after you cut it into parts, record the part count and the joins; a model needing more than your pre-set limit of parts fails.
- Game and print disagree: a pose that needs supports to print but rigs well is a legitimate “game pass, print fail”. Record both columns.
Pass or fail
Game pass: the prop gate from the prompt set plus a pose that suits your rig. Print pass: zero open edges, no slicer errors after at most the repair steps you allowed in advance, wall thickness at or above your printer’s documented minimum everywhere, and (if printed) a print with the features intact. A model can pass one and fail the other; report both. See the full print-readiness checks and AI miniatures for tabletop and resin.