Maker Slicer

A free online slicer for hobbyists and small shops to convert 3D models into G-code with material estimates and time predictions.

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About This Tool

Maker Slicer analyzes 3D models (STL/OBJ), validates geometry, and applies a printer profile to generate slicing instructions. It supports multiple materials, nozzle sizes, and bed dimensions; it can enable adaptive layer heights, supports, and multiple extruders. The resulting outputs include G-code, an estimated_print_time, and a material_usage report. The tool uses standard extrusion calculations and time models to produce a reliable prediction, along with a slicing_report that records chosen settings and any geometry issues. It validates inputs and geometry, detects non-manifold edges, and flags oversized bed or nozzle mismatches. By design, it targets hobbyists, educators, and small fabrication shops seeking consistent results and faster iteration cycles. Unique value comes from a built-in material database, profile-based automation, and explicit error checks that reduce print failures before a first run. Core features include model validation, printer-profile compatibility checks, automatic support generation, multi-extruder readiness, and export of G-code plus a summary report. Use cases include rapid prototyping, classroom demonstrations, and small-batch production planning.
The approach is conceptually separation between geometry processing, toolpath generation, and output packaging. This separation enables independent testing of geometry repair routines, extrusion modeling, and time/mass estimation. The tool emphasizes accuracy of material usage with density-aware calculations and provides conservative estimates when data is incomplete. It avoids resin, metal, or laser-cut workflows and adheres to standard Cartesian printers.

How to Use

  1. Upload or provide a model_file (STL/OBJ) and select a printer_profile.
  2. Configure slicing settings: layer_height, infill, supports, and temperature ranges.
  3. Run slicing to generate G-code, estimated_time, and material usage.
  4. Review the slicing_report and predicted quality indicators.
  5. Export G-code and, if desired, a project file for later edits.
  6. Optionally adjust settings and re-run to refine results.
How to use maker slicer

Frequently Asked Questions

Find Quick Answers

What file formats are supported?
Supported formats include STL and OBJ; the slicer validates geometry and will report non-manifold edges or missing normals. Other formats may be added in future updates.
How are time and material estimates calculated?
Time estimates derive from layer count, travel and print speeds, and acceleration models; material usage uses extrusion length and filament diameter with density-based calculation to grams.
Can I customize start or end G-code?
Yes. Start and end G-code blocks can be supplied within the printer profile and are applied automatically during export.
Are supports generated automatically?
Automatic supports can be generated based on geometry and overhang angle; density and pattern can be adjusted, with defaults that balance support and surface finish.

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