Production-Ready CAD Assembly for Electronics
Budget: $250 – $750 USD
Production-Ready CAD Assembly for Electronics
3D CAD / Mechanical Engineering Preferred (Production-ready CAD)
Goal: Turn unfinished 3D files, sketches and 2D drawings into a single, fully parametric, production-ready CAD assembly showing all functional parts, mates/joints, and clear component naming. (Includes charging case and accessories.)
Scope:
- Complete the tasks asked on the attachement. Consolidate supplied 3D files, scanned sketches and dimensional notes into one parametric assembly.
- Make all enclosures hollow for electronics, add internal mounting bosses, snaps/hinges, transparent lids, ergonomic fits, knurling as noted.
- Model internal mechanisms (turn/volume mechanism, magnetic mounts, pogo/mag contact locations, hinge geometry).
- Validate moving parts (mates, kinematics) and perform interference/clearance checks.
- Produce DFM recommendations for injection molding and 3D-print validation iterations.
Expert requirements:
- Senior Mechanical/Industrial Designer or Mechanical Engineer (3–8+ years): strong in parametric CAD (SolidWorks / Onshape / Creo / Fusion360), DFM for plastics, kinematic simulation, GD&T (ASME Y14.5), and injection-molding experience.
- Proven portfolio of small wearables / consumer plastics + experience routing space for PCBA and batteries.
- Familiar with tolerance stackups, wall-thickness, draft angles, snap fits, mold tooling constraints.
- Able to produce production drawings per ISO/ASME and standard file packages for contract manufacturers.
Deliverables:
- Native CAD source (SolidWorks/Onshape/Creo/Fusion files).
- Fully parametric STEP 242 assembly and parts (editable).
- STL files (3D-print ready) for each part.
- 2D manufacturing drawings (PDF + DWG) for each injection-molded part including:
- Critical dimensions and GD&T callouts (ASME Y14.5).
- Material spec, finish, wall thickness, draft, gate location suggestions.
- Exploded assembly view and assembly instruction PDF.
- Kinematic test report (motion animation / mate summary) and interference report.
- Dimensional inspection checklist (for first article) and recommended inspection points.
- One set of annotated 3D-printable prototypes (STL) for fit-check.
- Change log and one round of revisions included.
Acceptance criteria
- Key dimensions match supplied drawings within ±0.2 mm (as in PRD).
- Product Requirements Document
- No unresolved mates, suppressed features, or missing references in final native CAD.
- Moving parts articulate correctly in assembly (demonstrated in kinematic animation).
- Parts are manufacturable for injection molding (minimum wall thickness, draft, ribs, bosses validated).
Standards & checks to run
ASME Y14.5 / GD&T for critical dimensions.
DFM checks for injection molding (wall thickness, draft, radii, boss design).
Interference & clearance check, tolerance stack analysis for moving assemblies.
Draft & shrinkage allowances documented for tooling.
3D CAD / Mechanical Engineering Preferred (Production-ready CAD)
Goal: Turn unfinished 3D files, sketches and 2D drawings into a single, fully parametric, production-ready CAD assembly showing all functional parts, mates/joints, and clear component naming. (Includes charging case and accessories.)
Scope:
- Complete the tasks asked on the attachement. Consolidate supplied 3D files, scanned sketches and dimensional notes into one parametric assembly.
- Make all enclosures hollow for electronics, add internal mounting bosses, snaps/hinges, transparent lids, ergonomic fits, knurling as noted.
- Model internal mechanisms (turn/volume mechanism, magnetic mounts, pogo/mag contact locations, hinge geometry).
- Validate moving parts (mates, kinematics) and perform interference/clearance checks.
- Produce DFM recommendations for injection molding and 3D-print validation iterations.
Expert requirements:
- Senior Mechanical/Industrial Designer or Mechanical Engineer (3–8+ years): strong in parametric CAD (SolidWorks / Onshape / Creo / Fusion360), DFM for plastics, kinematic simulation, GD&T (ASME Y14.5), and injection-molding experience.
- Proven portfolio of small wearables / consumer plastics + experience routing space for PCBA and batteries.
- Familiar with tolerance stackups, wall-thickness, draft angles, snap fits, mold tooling constraints.
- Able to produce production drawings per ISO/ASME and standard file packages for contract manufacturers.
Deliverables:
- Native CAD source (SolidWorks/Onshape/Creo/Fusion files).
- Fully parametric STEP 242 assembly and parts (editable).
- STL files (3D-print ready) for each part.
- 2D manufacturing drawings (PDF + DWG) for each injection-molded part including:
- Critical dimensions and GD&T callouts (ASME Y14.5).
- Material spec, finish, wall thickness, draft, gate location suggestions.
- Exploded assembly view and assembly instruction PDF.
- Kinematic test report (motion animation / mate summary) and interference report.
- Dimensional inspection checklist (for first article) and recommended inspection points.
- One set of annotated 3D-printable prototypes (STL) for fit-check.
- Change log and one round of revisions included.
Acceptance criteria
- Key dimensions match supplied drawings within ±0.2 mm (as in PRD).
- Product Requirements Document
- No unresolved mates, suppressed features, or missing references in final native CAD.
- Moving parts articulate correctly in assembly (demonstrated in kinematic animation).
- Parts are manufacturable for injection molding (minimum wall thickness, draft, ribs, bosses validated).
Standards & checks to run
ASME Y14.5 / GD&T for critical dimensions.
DFM checks for injection molding (wall thickness, draft, radii, boss design).
Interference & clearance check, tolerance stack analysis for moving assemblies.
Draft & shrinkage allowances documented for tooling.