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How Does Auto Split Work in Meshy?

Split a 3D model into watertight, printable parts in about 40 seconds with Auto Split, then export straight to your slicer.

Table of contents

Auto Split takes a Meshy model and cuts it into separate, watertight parts sized to fit your build plate — ready to export straight to your slicer. It works on Standard models, textured or untextured, generated with Meshy 6 and Meshy 7.1. A full split previews in about 40 seconds, and you can re-split as many times as you like before committing.

What Auto Split can do

Meshy's Auto Split comes with two splitting modes, plus connectors to help the parts fit back together:

  • Auto split — one click, no prompt needed. Meshy finds the model's natural structural boundaries and cuts the whole model into parts sized to fit your build plate. Optional toggles let you Avoid Thin Walls to thicken thin surfaces before cutting, and add Connectors to the cut surfaces.

  • Semantic split — split the model the way you want it separated, following the model's meaning instead of one fixed geometry rule. It comes in two forms:

    • Split by part — separate the model along its individual parts, so each piece matches how you intend to print, paint or assemble it.

    • Split by color — separate the model along its color-coded regions, which is handy when each color goes to a different filament, resin or printer.

  • Connectors — you can add connectors to the cut surfaces and set their shape and size, so the split parts align and hold together when you reassemble the model.

When should you use Auto Split?

Auto Split is the right starting point when:

  • Your model doesn't fit your build plate — split it into parts that fit instead of rescaling it or cutting it by hand in a modeling tool.

  • You want multi-color or multi-material prints — semantic split by color lets each color region become its own part.

  • The model has clear, separate parts — characters with separate limbs, vehicles with wheels, props with removable accessories. Semantic split by part works best when those parts are visually distinct.

  • You'd rather not repair meshes — every cut surface is capped watertight, so there is nothing to fix in Blender before slicing.

  • You plan to finish parts separately — sanding, painting or printing in different materials is easier part by part.

Auto Split is not the tool for a precise cut at an angle you choose, and it only appears on Standard model type generations — not on Low Poly models.

You can refer to the tutorials article to know more details about splitting.

How many credits does Auto Split cost?

Each Auto Split generation costs 10 credits. If you'd like to retry a generation, keep in mind that each attempt will also consume 10 credits.

FAQ

1. Can Auto Split handle textured models?

Yes. Auto Split supports models that already have Meshy textures applied, as well as untextured (draft) models — as long as it is a Standard model generated with Meshy 6 or Meshy 7.1. If color or texture matters for your print, apply your textures in Meshy first, then run Auto Split.

2. Can I change the split if I don't like the result?

Yes. Auto Split is non-destructive, so you can re-run it as many times as you like. Each attempt takes about 40 seconds.

3. Does Auto Split work with Low Poly models?

No. Auto Split only appears for Standard model type generations on Meshy 6 and Meshy 7.1 — it isn't available for Low Poly or other model types.

4. What is the difference between auto split and semantic split?

Auto split decides the cuts for you: one click and the model is broken into parts sized to fit your build plate. Semantic split follows the meaning of the model instead, and comes in two forms — by part and by color. Both modes can add connectors to the cut surfaces.


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