# 3D Slicers ### What Is a Slicer in FDM 3D Printing? A slicer is specialized software that converts 3D models into printable instructions (G-code) for FDM printers. It "slices" digital designs into horizontal layers, calculates toolpaths, and defines parameters like print speed, temperature, and material flow. Slicers enable precise control over print quality, material efficiency, and structural integrity. ### How Slicers Work 1. **Model Import**: Accepts 3D files (STL, OBJ, STEP, etc.) to define geometry. 2. **Layer Segmentation**: Divides the model into layers based on user-defined layer heights (e.g., 0.1mm–0.3mm). 3. **Toolpath Generation**: Maps extruder movements, including infill patterns, supports, and adhesion aids. 4. **Parameter Configuration**: Adjusts nozzle temperature, retraction, cooling, and material-specific settings. 5. **G-Code Export**: Generates machine-readable instructions for the printer. Key features include **infill density** optimization, **support structure generation**, and **print speed adjustments** for balancing quality and efficiency. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://wiki.polymaker.com/the-basics/3d-slicers.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.