Shop · Engineered Load-Bearing Brackets
Σ reactions balance the applied load to 0.00% — the analysis is internally consistent, and the rating is traceable to a committed calculation.
Specifications
| Rated load | 26 lb (12 kg) at the arm tip |
|---|---|
| Factor of safety | 4.65× (on the design stress, against the Z-knocked 25 MPa allowable) |
| Max deflection at rating | 0.35 mm |
| Material | PETG · CF-Nylon for continuous-duty |
| Wall anchors | 4× M5 rated ≥0.5 kN tension into stud/masonry (not drywall) |
| Dimensions | 40 × 80 × 70 mm |
| Analysis | CalculiX C3D10 FEA, equilibrium-verified |
Application and configuration notes
The rating holds only into a real anchor: 4× M5 fasteners rated ≥0.5 kN tension into stud or masonry — not drywall (a prying hand-calc backs the bolt loads). PETG is rated for indoor, intermittent load; for sustained/continuous load or warm/outdoor environments the CF-Nylon variant is the right pick (no creep, higher rating).
In use
The part
A right-angle shelf/equipment bracket — vertical mount plate, horizontal load arm, and a triangular gusset bracing the two. Bolts to a wall and carries weight at the arm tip.
What makes it different from a printed bracket off a marketplace: the load rating is the output of a real finite-element analysis, run on the exact part in its as-printed orientation, with an interlayer-strength knockdown applied because FDM parts are weaker across their layers. We publish the safety factor and the analysis, not a number we made up.
Fully parametric — reach, width, thickness, and rated load are configurable, so we can size one to your shelf and load instead of selling you a one-size-fits-none part.