Sunnyday Technologies builds AI-native materials intelligence for 3D-printed concrete. The intelligence is ours to develop and earn. The ground it stands on is open on purpose. We publish an open data standard, we develop our printer as open hardware, we release our verification tools as open source, and we share the research and specimens that let others check our work. This page explains why we made openness the foundation rather than the exception, and how the open layers and the AI-native layer fit together.
What open foundations means here
Four things are genuinely open, and each is open because the field is better when it is shared.
- An open data standard. Open3DCP is a flat, documented schema for 3D-printable concrete: every material and property as a named column, in SI units, with explicit places for what was measured and what was estimated. Anyone can read it, write to it, and move data through it without asking us. A shared way to describe a mix is worth more to everyone than a private one is worth to us.
- Open hardware. M3-CRETE is a concrete printing development platform released under an open hardware license, with its bill of materials and build guide in the open. A builder can study it, reproduce it, and improve it. Open hardware keeps the printing layer honest and lets the people doing the work own their machines.
- Open tooling. CADCLAW is an open-source verification harness for AI-assisted CAD, published with its method and its tests. When the tool that checks the work is inspectable, the results mean more.
- Open research. We publish specimens, methods, and results so that claims can be examined rather than taken on faith. Validation that no one can see is not validation.
Why we start from open
The field moves faster on shared ground. Additive construction is still early. A common data schema, a reproducible printer, and inspectable tools lower the cost of entry for everyone working on the same problem. We would rather help grow the field than wall off a small part of it.
Trust is earned in the open. A property prediction is only useful if an engineer can trust it. Trust comes from transparency about how data is described, how specimens are tested, and what a number does and does not mean. Open foundations are how we make that transparency structural instead of promotional.
Open foundations reach the builders the central supply chain does not. Most coverage of this industry features one buyer: large demonstrations supplied by a national hub. That work is real and well-funded. It is also a fraction of the people who print concrete. Regional producers, smaller builders, and academic labs need tools they can adopt without a turnkey contract. Open standards, open hardware, and open tools are a complementary route for the audience the established path does not economically reach.
What AI-native adds
Open foundations describe and reproduce the work. The intelligence layer turns it into project decisions.
- CEMFORGE predicts the properties of a printable mix from its materials, anchored to cement and supplementary materials that suppliers actually ship.
- LOGiMIX takes those predictions into the real world: per-project mix-design reports and sourcing intelligence, plus on-demand prediction datapacks for teams that want to work with the engine directly.
- ACME Lab closes the loop with physical testing, so predictions can be checked against measured results and the data improves over time.
This is the part Sunnyday develops, validates, and stands behind. It is AI-native because prediction and sourcing sit at the center of the workflow rather than at the end of it. It is also a commercial product, and we are direct about that: the open layers are free because they should be, and the validated intelligence is the service we offer.
How it fits together
The pieces form one loop. Predict the mix with CEMFORGE. Print it with M3-CRETE. Prove it with ACME Lab. Open3DCP carries the data between every step, and LOGiMIX handles the logistics of getting a buildable mix from a supplier’s real inventory. Each step is traceable from a candidate mix to a measured result, which is what lets the next prediction be better than the last.
Scope and honest limits
Sunnyday’s outputs are informational performance predictions and sourcing intelligence for review by the engineer of record. We do not certify code compliance and we do not replace professional engineering judgment, trial batching, or laboratory testing. Predicted values are estimates from statistical models, not measurements or guarantees, and they should be verified by physical testing before any structural or production use. The engineer of record owns code applicability on every project.
Build with us
If you work on 3D-printed concrete, the open foundations are yours to use today. Read the Open3DCP schema, study the M3-CRETE platform, or run CADCLAW against your own assemblies. If you want predictions, sourcing, or testing for a project, that is what CEMFORGE, LOGiMIX, and ACME Lab are for. Either way, you are building on the same open ground we are.
Contact: info@sunn3d.com