dēlo
Sensible CAD for makers.
A desktop CAD tool that's easy to pick up, hard to outgrow, and yours to keep. One-time purchase, open formats, runs offline.
Sensible
Software that respects your time and your wallet.
Buy once, keep forever
One-time purchase. No subscription, no recurring fees. Pay once and it's yours.
Your files, your machine
Everything runs locally. No cloud, no account, no telemetry. Your designs never leave your computer unless you want them to.
Open formats, no lock-in
Export to STEP and STL. The project file format is human-readable. Take your work anywhere. Your designs are always yours.
CAD
Not a toy. Real geometry engine, clean interface.
Real geometry, not polygons
Built on the same type of geometry engine used in industrial CAD. Spheres are truly round, curves are mathematically precise, booleans don't break on complex shapes.
Edit dimensions right on the model
Click a number, type a new one. Dimensions live on the workplane where you can see them, not buried in a properties panel.
Smooth corners and blends
Round the edges of a box with a simple parameter. Blend shapes together smoothly. The geometry engine does the heavy lifting. You just set the radius.
Combine, subtract, intersect
Boolean operations that work reliably, on any number of objects at once. Merge parts, cut holes, find overlaps. The basics, done right.
Scripting when you need it
The interface stays clean. When you need more power, open the console. A few lines of code can do what dozens of clicks can't. Or ask AI to write it for you.
Easy to start, hard to outgrow
Create your first part in minutes, no tutorial needed. Start with simple shapes, work your way up to scripted parametric models.
For makers
Built for people who print, cut, solder, and glue things together.
Your workplane is your workbench
Drop a reference photo right onto the workplane. Leave notes. Keep three iterations of the same bracket side by side. Work the way you think. Messy, visual, iterative.
Assembly-first
Makers combine off-the-shelf parts with custom ones. dēlo is built around that workflow. Bring in existing components and design the pieces that connect them.
Hand-crafted aesthetic
dēlo doesn't look like a corporate spreadsheet. The visual style is inspired by industrial design marker rendering. A tool for makers should feel like it belongs in a workshop.
Runs on a Raspberry Pi
Native app for macOS, Windows, and Linux. Light enough for a Raspberry Pi 5, fast enough for a workstation. No browser, no Electron.
STEP and STL export
Send your designs straight to a slicer, a CNC, or a machine shop. Industry-standard formats, not proprietary blobs you can't open anywhere else.
No walled garden
The file format is open. Plugins and scripts are open. The core is paid so development stays sustainable. Everything around it is free.
Built by one maker for many
Most CAD tools are designed by committee for everyone. dēlo is designed by one person for a specific kind of user: someone who makes things with their hands and needs a tool that stays out of the way.
It's not trying to replace SolidWorks. It's trying to be the thing you reach for when SolidWorks is too much and Tinkercad is not enough.
Paweł Subocz
Building software for 27 years
Full-time on dēlo. Bootstrapped, no investors, no roadmap driven by VCs. The tech stack: Rust core, C++/Qt interface, OpenCascade geometry engine.
I'm building the tool I wish existed. Something you don't need a degree to use but won't hold you back when your projects get serious.
Frequently asked questions
One-time purchase, fair price. Not cheap, not enterprise pricing. Think Affinity, not Adobe. Early supporters get a founder's price that stays locked in forever.
Soon. Actively in development, shipping features every week. Sign up above to be first in line when it's ready.
macOS, Windows, and Linux. Native GPU rendering on each. The goal is to run on anything from a Raspberry Pi 5 to a high-end workstation.
The core is closed source and paid. That's what keeps full-time development sustainable. But everything around it is open: the file format, the plugin system, the scripting API. Your work is never locked in.
Yes. Export STL for your slicer, or STEP if your workflow needs it. 3D printing is the main use case.
There will be free tools built on dēlo's engine, generators and utilities for common tasks. The CAD application itself is paid, but dēlo lite will offer the core modeling experience at a very low price point. A cheap way to get started, with a full upgrade path when you need more.
I share screen recordings and development updates almost daily on X (@psubocz). It's the best way to see what's being built and where things are headed.
The foundation is solid. Real geometry engine, boolean operations, scripting, STEP/STL export, all working. Still adding features and polish. That's why this is a waitlist, not a checkout page.
Be the first to try it
Founder's pricing, locked in. Lower than launch price. Just a ping when there's something to try.