U225X PUBLIC-SAFE CONVERSATION NOTE

RECORD: CHAT-0087
TOPIC: Best Software for STL Split
IMPORTED: 2026.07.05

This note was generated from a matching conversation in the supplied ChatGPT export.
EXTRACTED REQUEST: what settings shoudl i use with a .25 nozzle to print this so it stays strong

RECOVERED CONVERSATION EXCERPTS
USER MESSAGES:
1. what software is the best for seperating stl files into 2
2. i need this seperated into 2 models so i can 3d print it
3. that worked, how do i get rid of this text though
4. what settings shoudl i use with a .25 nozzle to print this so it stays strong

ASSISTANT RESPONSES:
1. For splitting an STL into 2 separate pieces, the best software depends on *how* you want to split it. Given the kind of 3D-printing work you've been doing, I'd use [embedded media omitted] for precise cuts. Import the STL, convert the mesh to a solid/BRep if necessary, create a plane or sketch exactly where you want the split, then use Split Body. You can also add alignment pins, sockets, or dovetails before exporting both halves. For a quick straight cut with almost no learning curve, [embedded media omitted] is excellent. Its Split command lets you position a cutting plane visually and keep both halves. Since you already use it, [embedded media omitted] is also capable, especially if you want a free solution…
2. Yes. From your screenshot, the STL appears to contain the Zippo body and lid as disconnected mesh shells inside one STL. That makes this easier—you probably don't need to physically cut anything. In [embedded media omitted]: 1. Change the workbench dropdown from Part Design to Mesh. 2. Click the imported Zippo v31 object in the Model tree. 3. Go to Meshes → Split by components. 4. FreeCAD should create separate mesh objects for each disconnected component. 5. Hide the original `Zippo v31`. 6. You may get more than 2 pieces because the hinge pin or other parts could also be separate shells. Keep the pieces belonging to the lid together and the pieces belonging to the body together. 7. Select the lid component(s…
3. That preview helps a lot. The print orientation looks good: body and lid are upright, and the hinge barrels are vertical. I would keep them that way. Your 5 wall loops are good. With a 0.25 nozzle, those thin case walls are already almost entirely walls, which is exactly what you want for strength. I would change only a few things: increase bottom shell layers from 4 to 7, and increase sparse infill from 5% to 15–20% Gyroid. You do not need 30–35% infill on this model because the walls dominate the structure. Keep top shell layers at 7 and top/bottom solid infill/wall overlap at 25%. One thing I notice in the preview is those long diagonal lines inside the body and lid. Those look like travel moves, not printe…

EXTRACTED KNOWLEDGE / HOW-TO
- Change the workbench dropdown from Part Design to Mesh.
- Click the imported Zippo v31 object in the Model tree.
- Go to Meshes → Split by components.
- FreeCAD should create separate mesh objects for each disconnected component.
- Hide the original `Zippo v31`.
- You may get more than 2 pieces because the hinge pin or other parts could also be separate shells. Keep the pieces belonging to the lid together and the pieces belonging to the body together.
- Select the lid component(s), then File → Export → STL Mesh and save as `Zippo_Lid.stl`.
- Select the body component(s), then export as `Zippo_Body.stl`.
CONVERSATION SHAPE: 4 user turns / 5 assistant turns
ATTACHMENTS DETECTED: 20

Raw transcripts, private details, exact locations, account information, employer/customer-confidential material, and restricted software references are not published in this note.
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