Automotive packaging for Blender. Referencing SAE J1100, the global automotive measurement system.

H-Point: Package Builder

The foundation for a great car design is its size and proportions.

Car design is a uniquely challenging form of product design and sculpture. Before you invest your time developing a theme or massaging beautiful surface transitions, it's essential to set up your design with a sound foundation: the organization of the key systems and attributes a vehicle needs to meet its functional objectives. Where do the people sit? What are the wheels and tires like? How big is it? Get this wrong and no amount of surfacing will save the design. Get it right, and everything you build on top of it comes easier.

H-Point: Package Builder gets that foundation in place fast. Look up a handful of dimensions from real vehicles in the size class you're designing toward (a compact hatchback, a pickup, a two-seat sports car, whatever's close to your idea), enter them into the add-on, and it builds a complete, correctly proportioned package directly in Blender: seating position, sightlines, wheel and tire placement, headroom, all of it, organized and related the way a real studio package would be.

From there, it's yours to push. Raise the roofline, stretch the wheelbase, shrink the cabin, add a third row: every change ripples through the model automatically, so you can chase a vehicle that's never existed while staying grounded in proportions that actually work for a human body. It's a foundation for research-backed design and for pure invention, and it never makes you choose between the two.

What you get

Occupant packaging — SAE J826 kinematic driver and passenger manikins at the 95th percentile, with correct skeletal segment lengths and a planted accelerator foot that stays true to the pedal plane as seat height changes. Independent torso angle control, 3-across seating, and a symmetric toggle for off-center occupant placement.

Seat reference profiles — Seatback and cushion lines offset from H-Point per the J826 template, with adjustable cushion angle, seatback height, cushion length, and corner radius.

Vision and headroom — The full SAE J941 SEP2002 eyellipse: correct axes, 12-degree tilt, and package-geometry centroid, held fixed as a true reference even as the occupant reclines. J1052 head contour and effective headroom clearance included.

Steering — Wheel diameter, tilt, column reach, and offset, all tied to the driver position.

Knee blocker clearance — SAE L62 packaging clearance indicator, parallel to shin geometry.

Tire and wheel assemblies — Full ISO/SAE tire code support across the complete aspect-ratio grid, independent front and rear configuration, tandem axle spread control, and half-inch commercial rim sizes.

Bounding box and reference geometry — Vehicle envelope, ground plane, wheelbase line, and section planes, organized automatically into named collections in the outliner.

Why it's different

Every dimension in this add-on traces back to a cited SAE section, not a rule of thumb. When the standard changes or gets corrected, the tool gets corrected. Nothing here is invented to look plausible.

Requirements

Blender 4.2 or later (Extension format). No external Python dependencies. No license server, no activation, no phone-home.

License

GPL-2.0-or-later. You own what you install.

What designers are saying

"Love it Alan." Xitij Mistry, Creative Design Manager at Lincoln and Ford Design

"Packaging is surprisingly hard to do quickly and to iterate on. Super cool tool!" Shad Woodland

"Awesome! Been doing this quasi-manually for a decade. Love to see the interactivity!" @scafoto

"This is perfect for automotive design college, I need this." @calcium_pvt

"Now I can stop my version development." @gpravin1234 · "This looks incredible. How do I get it!!!!" @dave_clark_designs · "This is the best news I've heard in 2026." @romzes_01 · "Tried it. Beautiful." @halawadj · "Game changer." @ianshotwheels · "Brilliant." @al.yasid.arte  · "This is dope." @wilbursupermachines 

 Use in conjunction with "H-Point: The Fundamentals of Car Design and Packaging" to develop innovative concepts rooted in functional objectives.

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