FundaCAD Files

The newest builds are always on the rolling beta and the development build.

What's new since the last beta

Security

• A STEP or XBF import no longer reads other files or network locations that the file names.
• More damaged or oversized documents and imports now stop with a clear message, instead of freezing or filling memory or disk.
• Plugins work within firmer limits, and installing a plugin or exporting through one keeps your old file if something goes wrong.
• The assistant connection checks documents more strictly and follows the same save rules everywhere.
• On Windows and Linux, the part of FundaCAD that reads your files runs with fewer rights, so a bad file can do less harm.

Accessibility

• Interface size goes from 80 to 200 percent, with a readable text floor and Comfortable text.
• After renaming in Items by keyboard, focus goes back to the row.
• The new Geometry tab beside Items lists faces, edges and planes, so you can find, hear and pick them without a mouse. Every tool that waits for a face, edge or plane takes a row from it.
• Line, rectangle and circle can be drawn with keys only, and are spoken as you draw.
• Sketch dimensions and constraints are a list you can move through with keys, and free or fixed sketch lines differ by more than colour.
• Printability, interference and Stress results are also listed in words.
• Messages are spoken and stay long enough to read, and Undo says what it undid.
• Fields say their unit, and why a value was refused.
• Notices stay out of the way of an open dialog, and a notice with a button waits until you can use it.
• Comfortable text wraps a long dropdown value onto a second line instead of cutting it off.

Interface

• Panels, menus, sketch labels and placed boxes keep their place and stay inside the window at every Interface size.
• Preferences stays visible in the Edit menu in a short window or at a large Interface size.
• Dragging the rollback marker in History shows where it will land.
• Resizing the window no longer shows an unexpected error.

Modeling

• Moving the camera in Path traced no longer shows black bands or partial pictures.
• Inside a closed model, Automatic projection stays in perspective near an axis, unless you pick a view.
• The fillet preview shows the G2 or G3 shape you picked, the same one Enter builds.
• Zebra stripes follow the surface and show curvature, with a stripe direction and width.
• The tool value box takes parameter names and expressions.
• A modeling step that fails shows its error and the next step runs, instead of the engine restarting.
• Hiding a sketch in Items shows at once.
• The origin plane tiles have four rounded corners and a small gap again.
• A mouse wheel keeps zooming at every Interface size, and Ctrl with the wheel pans the view up and down.
• In Path traced, the picture settles sooner after a zoom, and no longer comes back in between the repeats of a held arrow key or during a view click from inside a model.
• Ctrl+Z in a tool first takes back what you typed in its field.
• Press/Pull on a round picked with the walls it meets carries the round along at its own radius, instead of refusing, whichever you click first.
• Press/Pull on a round alone changes its radius, so it stays smooth with its walls.
• Press/Pull shows the body see-through only in Cut.
• Shell refuses a face picked through its opening, and Shell across several bodies keeps each face on its own body, also when you edit it again.
• Undo, or any change that removes the step an open tool is editing, closes that tool.
• A sketch far from the origin that makes an empty body now reports a failure.

Stress

• Stress runs thin walled parts by itself, with no size to set. More options has Mesh detail: Coarse, Standard and Fine.
• While the Stress panel is open, Undo and Redo change only the Stress setup.
• Every support now has a remove button like a load, and supports and loads have Clear to empty their faces.
• A deformation scale below 1 now says it is drawn smaller than true size.

Assistants

• AI assistants can list, create, edit and assign render materials, on bodies and on single faces. In the open app each change is one step you can undo.

Files

• Big 3MF and SVG files import with less memory.
• A recovered session is cleared once you save it, discard it or choose Don't save.
• A version saved right after opening an example holds only your next change.

Plugins

• Plugin number fields take a decimal comma and refuse values past their limits or in the wrong unit.
• Plugin panels keep their content inside the panel, and Fasteners keeps Save in reach at every window width.
• The Gamepad plugin no longer picks up a 3D mouse.

Updates

• Settings, Updates has a channel picker.

Linux

• The Flatpak and AppImage now use native Wayland, for sharper text at a fractional display scale.

After you update

• In the Flatpak, assistants work in Documents/FundaCAD and ask before using any other path.
• A STEP file that refers to other documents imports without those references, and a note on the import says so.
• A plugin that uses a name another plugin already uses is not loaded, and the plugin list names the plugin that owns it.
• On Linux with a SpaceMouse, unplug it and plug it back in once. If you set it up with setup-spacemouse.sh, run it again.
• If you set Scrolling to Mouse to work around the wheel problem, you can set it back to Automatic.

Known limits

• If flashing light affects you, stay in Realtime or Matcap. Path traced can still change the whole picture quickly while you move the camera.
• On low powered or software graphics, Path traced is greyed out with the reason.
• With Realtime while moving off, the traced picture can trail the edges for a moment while you drag.
• While you zoom in Path traced, the picture can restart a few times before it settles and show a single brighter frame.
• With the camera inside a solid wall, also while it passes through one, Path traced shows a black picture.
• In the Flatpak, a 3D mouse does not work without setup. See the 3D mouse page of the manual.
• On Ubuntu with the open nouveau Nvidia driver, the Flatpak and AppImage close right after they start on Wayland.
• On Linux, an HDR dropped on the window is not picked up yet. Use Import HDR in the Render panel.
• With more than 128 edges in one fillet or chamfer, the drag stops the size only at the 128 edges nearest the arrow. A size too big for an edge farther away shows as a red preview instead.

Downloads

Windows: the setup exe or the portable exe. macOS: the dmg. Linux: the AppImage, deb, rpm or Flatpak. The last 20 betas also stay on the releases page as their own versions, with a SHA256SUMS.txt to check the files.

If you installed an earlier beta

Betas from before 1.0.386 cannot check updates signed with the new key, so install this one by hand once over your current copy. Your files and settings stay.

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Read this first

This is FundaCAD 1.0 on the Rust geometry engine. It replaces the Python engine, which is retired.

• If a model builds differently here than it did on the Python engine, a missing or changed face, a fillet that refuses, a feature the skipped feature banner names, please report it with the file.
• Plugin geometry runs as sandboxed WebAssembly components. Every plugin in this repository ships one (3D Printing Toolbox, Screws, Printing, Texture); a third party plugin without one says so by name when its feature is used.
• MCP is part of the app: fundacad --mcp is the server for AI assistants, and Preferences, AI assistants (MCP) gives the setup for Claude Code, Claude Desktop or any MCP host. An installed MCP server plugin is removed on first start.
• Documents saved by the Python engine build are ordinary .funda files and open here.

FundaCAD 1.0 beta (1.0.576), Rust engine, rebuilt from main at b86b2a4.

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Unsigned: Windows SmartScreen needs "More info", then "Run anyway"; macOS may call the app damaged, which xattr -dr com.apple.quarantine "/Applications/FundaCAD.app" clears. Install notes.

This build carries no Python runtime, so it is a fraction of the size of the Python engine builds.