Haekal Abiyyu

Mechanical CAD & Sheet Metal Design Engineer

Upwork • Freelance

Jun 2026 - Present • 4 mos

Delivered manufacturing-ready 3D CAD models, sheet metal assemblies, and precision 2D DXF profiles for international fabrication and engineering clients. • PTU LiDAR Sheet Metal Bracketry: Designed and modified custom sheet metal mounting brackets across 3 Pan-Tilt Unit (PTU) LiDAR configurations using Alibre CAD and SolidWorks. Engineered structural upgrades on L1 and L3 brackets by integrating stiffening bends, optimizing sheet thickness to 2mm, and configuring multi-type mounting hole patterns, delivering native CAD files, laser-cut DXF flat patterns, and folding/bending drawings. • Drivetrain & Custom Sprocket Design: Created precision 2D DXF cutting profiles for 520-pitch motorcycle sprockets in 51-tooth and 55-tooth configurations from 1:1 reference scans. Engineered exact mounting geometry featuring a 124mm center bore, 8.25mm bolt holes on a 139mm pitch circle diameter, and redesigned 35mm lightening holes. • Reverse Engineering & Gasket Vector Tracing: Stitched and traced multi-section scans and calibrated photographs of engine cylinder base gaskets into production-ready laser-cutting DXF files. Maintained tight dimensional clearances, including a 72.25mm center bore clearance and precision 6.25mm to 8.5mm bolt hole tolerances.

FSAE Team Head of Powertrain Division

Cerberus Racing Team ITB • Temps partiel

Dec 2025 - Present • 10 mos

Lead the Powertrain Division for Institut Teknologi Bandung's Formula Student (FSAE) team, overseeing the end-to-end mechanical design, parametric 3D CAD modeling, and fabrication of race car powertrain and drivetrain subsystems. Key Responsibilities & Achievements: • Parametric 3D CAD & Packaging: Designed custom drivetrain components, sprockets, engine mounts, and 3D-printed intake manifolds/plenums in SOLIDWORKS under tight chassis packaging constraints. • Design for Manufacturing (DFM): Created production-ready 2D technical drawings with accurate tolerances (GD&T) for CNC machining, manual lathe operations, sheet metal laser cutting, and additive manufacturing. • Engineering & Fitment Analysis: Evaluated mechanical assemblies, structural integrity, and component clearances to ensure reliability under high-stress racing conditions. • Workshop Fabrication & Assembly: Directed hands-on engine maintenance, custom part fabrication, and physical subsystem integration from digital prototype to track-ready assembly.