Print.
Cure.
Section. Test.
ACME Lab is the testing layer of the Sunnyday Full Loop. We demonstrate, today, the workflow that takes a 3D-printed concrete coupon from the print bed through controlled curing, sectioning, mechanical testing, and reporting — with a roadmap toward a fully autonomous loop that removes humans from the dull, dirty, and dangerous portions of the work.
Capability Matrix
Each row of the workflow is shown in two columns: what we can demonstrate today with human-in-the-loop operation, and the automation step on the roadmap toward an autonomous testing lab.
| Workflow step | Demonstrated today | Automation roadmap |
|---|---|---|
| Mix design | LOGiMIX produces a candidate mix with predicted compressive, splitting tensile, flexural, slump, yield stress, and density values for a printed coupon, anchored to commercially available cement and SCM inventory. | Closed-loop reseed when measured lab results disagree with prediction beyond a configured tolerance. |
| M3-CRETE motion platform prints meter-scale coupons and wall sections under logged extrusion, layer-time, and ambient conditions. | Robotic build-cell scheduling and queue management without operator intervention between runs. | |
| Cure | Controlled curing under logged temperature and relative humidity in a Sunnyday curing chamber. | Sensor-integrated curing rooms that auto-adjust climate setpoints per specimen-class recipe. |
| Section | Manual coring and cutting of cored cylinders and cut prisms from printed coupons, following established research-grade protocols for printed-specimen anisotropy. | Robotic CNC sectioning with per-specimen feature tracking and orientation recording. |
| Test | Compression, splitting tensile, and flexural testing through qualified external laboratory partners. Early-age slump, spread, and yield-stress measurements in-house at Sunn3d. | In-cell compression and tensile rig with auto-loaded specimens and machine-readable results. ACME Lab will pursue accreditation under standards developed for autonomous robotic testing — a prospective accreditation pathway for a fully-autonomous workforce, distinct from human-operator accreditation regimes. |
| Report | LOGiMIX-formatted PDF deliverable plus CEMFORGE telemetry for the specific print run, in the Sunnyday house style for engineer-of-record review. | Continuous-stream reports keyed to each print run, available before the next coupon is loaded. |
Why an Autonomous Loop
Specimen-level testing of 3D-printed concrete is dull, dirty, and dangerous work. Coring, cutting, loading, and breaking specimens carries silica-dust exposure, repetitive lifting, and the standard hazards of high-load mechanical testing. An autonomous loop reduces the human exposure profile and the safety-and-liability cost structure necessary to protect humans — cost structure that is not needed for robotic operators.
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Lower human exposure
Robotic sectioning and loading removes silica-dust and pinch-point hazards from the routine workflow.
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Faster decision-making
Continuous specimen throughput lets LOGiMIX reseed against measured data on the order of hours, not weeks.
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Reduced safety overhead
Liability and protective-equipment costs that scale with human operators do not scale the same way with robotic operators.
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Reusable specimen data
Specimen provenance is recorded by the loop, not transcribed later, so the data is fit for retraining and re-publication.
Scope, Disclaimer, and Validation
The fully autonomous lab loop described on this page is a prospective capability, in development, and is not yet deployed for commercial certification work. Current commercial deliverables remain human-in-the-loop and rely on qualified external laboratory partners for code-required mechanical testing. The engineer of record retains responsibility for code applicability on each project. ACME Lab outputs describe printed specimens (cored cylinders and cut prisms taken from printed coupons), which carry an anisotropic layer-interface penalty relative to cast specimens.
Sunnyday Full Loop
Connected 3DCP Stack
The Sunnyday portfolio links material records, mix intelligence, printable hardware, logistics, and validation planning so project decisions remain traceable from candidate mix through measured result.