March 23, 2026
The spice hits the CAD market
Dune3d: A parametric 3D CAD application
New DIY 3D app sparks cheers, FreeCAD shade, and Dune jokes
TLDR: A lone dev released Dune3D, an open-source 3D design app for 3D-printing that imports standard files and makes clean rounded/angled edges. Comments exploded with FreeCAD shade, a “build new vs fix old” clash, shout‑outs to browser and code tools, and Dune game jokes—fueling fresh buzz in DIY CAD.
A solo dev just dropped Dune3D, a fresh open‑source 3D design app aimed at making simple, tweakable models for 3D‑printing. It reads your standard STEP files (think: the passport many pro tools use) and handles those rounded and beveled edges everyone wants. Under the hood it stitches together proven parts, but the plot twist is the comments: one camp is throwing confetti, the other is tossing tomatoes.
The loudest chorus? The FreeCAD pile‑on. One user flat‑out declared, “FreeCAD is the worst,” while another side‑eyed the feature list, joking that “fillets and chamfers” (rounded/angled edges) being headline‑worthy is a mood. Meanwhile, the “why reinvent the wheel?” crowd perked up when the dev admitted upgrading older tools was too big a lift, igniting the classic open‑source brawl: build new vs fix old. Browser lovers hyped Modelrift for editing models entirely online, while the code‑savvy folks dropped links to CadQuery and build123d, turning the thread into a buffet of alternatives. And yes, the name spawned memes—“sounds like a Dune shooter” had the room cackling. Verdict? A scrappy newcomer has entered CAD Thunderdome, and the community is delightfully, chaotically split on whether it’s the hero they’ve been waiting for—or just more spice in the sandbox.
Key Points
- •Dune 3D is a parametric 3D CAD application supporting STEP import/export and fillets/chamfers.
- •The project addresses perceived shortcomings in FreeCAD (workflow, 3D constraints) and Solvespace (no STEP, no fillets/chamfers).
- •It uses Open CASCADE as the geometry kernel and integrates Solvespace’s solver library, patched for performance.
- •Viewport and editor infrastructure are adapted from Horizon EDA; tools and actions are accessible via a spacebar menu.
- •Build instructions and documentation are provided, with support for Windows and macOS, and discussions on Matrix and GitHub.