JC Additive measures broken, worn or obsolete parts, rebuilds them as precise CAD models, and reprints them in engineering-grade materials — from automotive trim to one-off products and prototypes.
Every job follows the same engineering discipline — the same one used to develop cars, applied to your part.
The original part is measured precisely — geometry, fixing points, material behaviour and how it interfaces with everything around it. Damaged or missing features are inferred from function, not guesswork.
A full parametric CAD model is built from the measurements. This is where problems get fixed: weak points reinforced, tolerances tightened, and design flaws in the original engineered out.
The part is printed on modern high-speed FDM equipment in a material matched to its job — UV-stable ASA for exterior automotive parts, tough PETG for functional pieces, PLA for display work.
From engineering-grade replacement parts to products people love — every one starts as a CAD model.
An unavailable OEM aero part, measured from the worn original, rebuilt as a parametric CAD model and reprinted in UV-stable ASA. Fitted and in daily service — a like-for-like replacement engineered from first principles.
A retro gaming lamp designed from scratch in CAD — multi-part construction, light-diffusing panels and integrated LED lighting. Proof that the same precision behind engineering parts makes products worth putting on a shelf.
Durable, personalised name tags designed for a school backpack — and for surviving a school year. Small-batch custom work with fast turnaround: names, logos, colours and shapes made to order.
JC Additive is run by Jack Chilvers, a professional automotive aerodynamicist with a background in Formula 1 and mainstream vehicle development.
That matters because the hard part of reverse engineering isn't the printing — it's understanding why a part is shaped the way it is, what loads it sees, and what it has to survive. That's the day job, applied to yours.
Send a photo and a rough description. You'll get an honest answer on whether it can be reverse engineered, what material it needs, and what it'll cost — usually within 48 hours.
or find JC Additive on LinkedIn