Meet a part

Brace — Cross

Pattern

SU–Array · four arms, round ends

Arms

3 · 4 · 3 · 4 SU (from a shared center hole)

Distinct holes

11

Thickness

SU00.25 (3.125 mm)

Part number

SPN–BRC–003043

A different part greets you on every visit. This is the same model you would download and print.

Browse by family

The catalog at get.stemfie.org is organized by component family. Pick one, use the filter box to find a size, and download the format your slicer or CAD program prefers.

• BeamsStraight, angled, box-section · 5 families
• BracesStraight, slotted, angled, cross · 9 families
• PlatesTriangular, square, rectangular, hexagonal · 5 families
• FastenersScrews, pins, nuts, spacers, washers · 20 families
• Gears & racksGear wheels and T-slot racks · 2 families
• Shafts & collarsPlain and indexing shafts, shaft collars · 3 families
• HubsFixed and free hubs, TT-motor hubs · 4 families
• Wheels & pulleysTreaded ground wheels, winding pulleys · 2 families
• Mounts, holders & knobsElectronics mounts, motor brackets, loops, knobs · 6 families
• Tools & storageFastening tools, cutters, parts drawers · 4 families
• Build plates & calibrationEssentials plate, calibration file, quick-print samples · 5 families
• Templates & signsCAD templates, the Standard's reference geometry, signs · 6 families

See all families on get.stemfie.org

• New to STEMFIE?Start with the Get Started guide. It walks you through a quick sample print and a fit check, so your printer is ready before you print a whole kit.
• Every part speaks the same languageAll parts are built on the STEMFIE Grid: one STEMFIE Unit is 12.5 mm. That shared geometry is why any part fits any other part, whenever it was designed. Read about the STEMFIE Standard.
• Free, and staying freeThe STEMFIE Standard and every individual STEMFIE part are free to download, and always will be. No account, no catch. Some curriculum material and premium kits may carry a price; every purchase funds the development of the free system. See how you can support STEMFIE.

⚠️ Contains small parts that are a choking hazard. Not suitable for children under 3. Suitable for ages 3 and up under adult supervision.