Harmonic Drive Bracket·Ridgeline Robotics
Trial 2
SuccessA356Jun 16, 2026
Goal
Even out the web section and hold flatness under 0.2mm.
Process
- Pour temp
- 700C
- Mold temp
- 160C
- Alloy batch
- A356-2606-A
- Trial date
- Jun 16, 2026
- Gating
- Side gate into the web, unchanged.
- Changed from the previous trial
- Web tapered from 6mm to a constant 4.5mm. Mold temp down 15C.
What came out
Defects observed
Face flat to 0.15mm across 110mm. No porosity, no cold shut.
Lessons learned
A constant section beats a clever gate for flatness. Worth checking before adding chills.