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Gerber 3D Stencil GeneratorLOCAL
Free 3D Printable PCB Solder Paste Stencil from Gerber Files (Stenchill Alternative)

Upload your Gerber ZIP file, get a 3D-printable stencil file in seconds. Best free DIY alternative to Stenchill.
上传 Gerber ZIP，直接生成可用于 3D 打印的焊膏钢网 (STL/3MF/SVG)。完全免费，无服务器上传。

Workspace / 工作区

Drop Gerber ZIP / 点击上传

Supports KiCad, Eagle, Altium exports. / 支持常见 EDA 导出 ZIP

Notes: this tool currently handles standard flash-based paste pads (C/R/O/P apertures).
说明：当前版本优先支持常见焊膏层闪光焊盘（圆/矩形/长圆/多边形简化）。

Upload a Gerber ZIP and click Generate.
上传 Gerber 后点击生成，即可看到钢网预览。
Report will appear here...

What is a Gerber Stencil Generator?

A Gerber stencil generator converts PCB paste layer data from Gerber files into 3D-printable solder paste stencil models. Instead of ordering expensive stainless steel stencils for prototyping, you can 3D print a stencil at home using FDM or resin printers. This tool parses your Gerber ZIP file locally in the browser and exports the stencil geometry as SVG, OpenSCAD, STL, or 3MF.

How to Generate a 3D Printable Solder Paste Stencil

  1. Export Gerber files from your PCB software (KiCad, Altium, Eagle, EasyEDA, etc.) as a ZIP archive. Make sure it includes the paste layer.
  2. Upload the ZIP file using the upload area above.
  3. Select the correct paste layer file (Top Paste or Bottom Paste).
  4. Adjust stencil thickness (0.3–0.4 mm is a good starting point for FDM), pad shrink per side, and other parameters.
  5. Click Generate to preview the stencil.
  6. Download the output as STL, 3MF, SVG, OpenSCAD, or an all-in-one ZIP.

Supported Paste Layer File Names

  • KiCad: F.Paste / B.Paste (*.GTP / *.GBP)
  • Protel / Altium: .GTP (Top Paste) / .GBP (Bottom Paste)
  • Eagle: tCream (top) / bCream (bottom)
  • EasyEDA: Top/Bottom paste files in Gerber ZIP
  • General: Files containing "paste", "cream", or extensions .GTP / .GBP

Export Formats Explained

  • STL: Standard 3D model format, compatible with all slicers (Cura, PrusaSlicer, Bambu Studio, etc.).
  • 3MF: Modern 3D format with better precision than STL. Recommended if your slicer supports it.
  • SVG: 2D vector outline of the stencil. Useful for laser cutting or CNC routing.
  • OpenSCAD: Parametric 3D model source. You can modify dimensions in OpenSCAD before exporting.
  • ZIP (All): A bundle containing STL, 3MF, SVG, OpenSCAD and a text report.

3D Printing Recommendations

FDM 0.2mm Nozzle

Best for fine-pitch pads (0402, 0603, QFP). Set layer height to 0.1 mm and 100% infill.

FDM 0.4mm Nozzle

Suitable for larger pads (0805+, SOT-23, SOIC). Faster printing but less detail.

Stencil Thickness

0.3–0.4 mm is a good starting point for FDM. Professional stencils use 0.1–0.15 mm (stainless steel).

Resin / SLA

Resin printers offer higher resolution for very small apertures. Consider resin for fine-pitch components.

Parameters Explained

  • Stencil Thickness: The Z-height of the stencil. Controls how much solder paste is deposited.
  • Pad Shrink per Side: Reduces each pad opening by this amount on each side. Compensates for printer inaccuracy.
  • Min Aperture: Apertures smaller than this are skipped. Prevents unprintable features.
  • Border Margin: Space around the PCB area for the stencil frame.
  • Mirror X: Mirrors the stencil horizontally. Auto mode mirrors bottom paste only.
  • Registration Shoulders: Adds alignment features to hold the stencil in place on the PCB.

Limitations

  • Best suited for prototyping, repair and small batch production.
  • Complex Gerber aperture macros may not be fully supported.
  • Very small apertures may be automatically skipped based on the Min Aperture setting.
  • Always check the preview before printing.
  • For production assembly, use a professional stainless steel stencil from a PCB manufacturer.

Privacy

This tool runs entirely in your browser. Your Gerber files are parsed locally using JavaScript and are never uploaded to any server.

FAQ

Can I convert Gerber to STL?

Yes. Upload a Gerber ZIP containing a paste layer, configure the stencil parameters, click Generate, then download the STL file.

Can I export 3MF?

Yes. 3MF export is supported alongside STL, SVG and OpenSCAD.

Which Gerber file do I need?

You need the paste layer file. In KiCad this is F.Paste or B.Paste. In Protel/Altium format it has a .GTP or .GBP extension.

Does this tool upload my PCB files?

No. All processing happens locally in your browser. Your files never leave your device.

Why are some apertures missing from the output?

Apertures smaller than the Min Aperture setting are automatically skipped because they would be too small to print reliably.

Is this suitable for production?

3D printed stencils work well for prototyping and small batches. For production runs, use a professional laser-cut stainless steel stencil.

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