Sector · Engineering & R&D
3D printing for R&D and engineering teams
Get from CAD to a physical part in days — without adding headcount or waiting on a machine shop. Full-process coverage from SLA cosmetic checks to SLM structural validation, in engineering-grade materials.
Typical prototype turnaround
- 1Upload CAD (STEP preferred)
- 2Engineer reviews DfM and material
- 3Print, post-process, QC
- 4Ship in 2–5 business days
Quick answer
3DadditHub is an on-demand prototyping and low-volume production partner for R&D, mechanical and product engineering teams. Upload a STEP file and get a physical part back in 2–5 business days across SLA, MJF, SLS, FDM and metal, in engineering-grade materials including PEEK, ULTEM, PA12-CF and SLM stainless. NDA on first message, engineering DfM review on every quote, no MOQ.
Applications
What we manufacture for engineering teams
The concrete part types R&D and product engineering groups order every week.
- Concept models across early iterations of a design
- Functional test articles in the same material family as production
- DfM verification pieces — check draft, wall thickness, snap-fit behaviour
- Ergonomic and human-factors checks for hand tools, grips, handles
- First-off run articles for tool trials and mould-flow validation
- Structural test coupons for tensile, impact and fatigue characterisation
- Fluid and thermal test articles for CFD/thermal model correlation
- Investment-cast patterns and sacrificial cores for downstream casting
- Pre-production pilot batches of 20–500 units for beta testing
Process
How engineering teams work with us
From CAD upload to physical part on the desk, without slowing your iteration cadence.
NDA, then upload
Sign an NDA (yours or ours) before you send anything. STEP is preferred; STL and mesh formats accepted with a note on tolerances.
DfM and material call
An engineer reviews your file, recommends process and material against your test intent, and returns a technical quote in 24 hours.
Print and inspect
We print, post-process (support removal, sanding, media blast, machining of critical features) and inspect against your drawing.
Ship and iterate
Parts ship in 2–5 business days. Send the next revision the same day you get the last one — we hold your project queue open.
Materials
Materials and processes typical for engineering use
Full-range coverage — early-stage form checks to end-use functional validation.
- SLA / DLP — Tough 2000, Rigid 10K, Clear, biocompatible resins. Cosmetic and high-detail checks.
- MJF PA12 — isotropic, functional test parts, batch nesting for cost-representative pilot runs.
- SLS PA12 / PA12-GF — same as MJF plus glass-fibre variant for higher stiffness.
- FDM engineering polymers — PC, ABS, PA-CF for functional testing in real thermoplastic families.
- FDM high-performance — ULTEM 9085, ULTEM 1010, PEEK, PPSU for flame, temperature and chemistry.
- SLM metal — 316L, 17-4PH stainless, AlSi10Mg aluminium, Ti-6Al-4V titanium for structural validation.
- Casting patterns — SLA-printed investment-cast patterns for downstream metal casting cycles.
- TPU 95A / silicone-like resins — flexible and elastomeric behaviour for gaskets and dampers.
Typical case
Compressing an R&D iteration cycle from weeks to days
A medical device R&D team was running iteration cycles at 3–4 weeks per revision through their previous prototyping supplier. Each revision needed 6 functional articles in a PC-like material for grip-force testing on the enclosure. We onboarded them under NDA, standardised on MJF PA12 nested batches, and dropped the cycle to 4 business days per revision at a comparable unit cost. Over the next 9 months they completed 11 revisions instead of the 3 they had budgeted — and hit design freeze one quarter early.
A second example: an automotive R&D group needed a titanium (Ti-6Al-4V) suspension-bracket first article for CAE correlation. SLM print, HIP + heat treat + CMM inspection, delivered in 11 business days vs the 7-week quote from their machining supplier.
Pain points
Common engineering pain points we solve
What R&D leads, mechanical engineers and product engineering managers tell us.
- Before: 3-week iteration cycles with an external prototyping shop. After: 3–5 business days per revision.
- Before: CNC machining too slow and too expensive for early-stage iteration. After: additive at 10–30% of the cost.
- Before: in-house desktop printer is fine for form checks, fails on functional. After: engineering-grade MJF/SLS/SLM outsourced.
- Before: material selection guesswork with no application support. After: engineer-to-engineer recommendation on every quote.
- Before: no way to run structural validation short of machined coupons. After: SLM metal coupons in 10 business days.
- Before: sensitive IP going to overseas print farms with no NDA. After: NDA-first, EU-based, files never shared.
- Before: pilot-batch of 100 units too small for injection moulding. After: MJF PA12 nested batch, no tooling cost.
- Before: prototype behaves nothing like the production part. After: prototypes in the same material family as production.
FAQ
Engineering 3D printing — frequently asked questions
Early-stage form and fit: SLA/DLP for high detail and smooth surfaces, FDM in PLA or PETG for cheap fast iterations. Mid-stage functional test: MJF or SLS in PA12 for isotropic mechanical validation, FDM in PC or PA-CF for engineering-thermoplastic behaviour. Late-stage pre-production: MJF nested batches for cost-representative runs, SLM metal for load-critical parts, SLA in tough resins for cosmetic first articles. Tell us the test and we recommend the process.
Ready to shorten your next iteration?
Upload a STEP file under NDA. Engineering DfM review and technical quote back within 24 hours — parts on your desk in 2–5 business days.