Guide
Which material for a technical 3D-printed part?
A “technical” part usually mixes load, temperature, environment, or chemicals — PLA is rarely the endgame, and the dominant constraint should drive the filament.
Here, technical means the part must work under stress (mechanical, thermal, fluids, or precision), not only look right once. Common families: PETG (first functional tier), ABS/ASA (heat / technical default), PA (mechanical + often moisture discipline), PC (heat + rigidity, hard to print — PC FR), PP (PP EN) for some chemical/moisture cases. Use thematic guides: mechanical, heat tiers, moisture. Polyester nuance: PET vs PETG. Hub: best material guide.
One dominant constraint: open the matching thematic guide first.
Several strong constraints: PA or PC may appear — only with suitable design and printer.
Result in under a minute
In one sentence
Direct answer: name the blocking constraint (mechanical, thermal, water/chemical, UV). Then pick a filament — often PETG first for accessible function; ABS/ASA for more heat; PA6/PA12 for serious mechanics; PC for extreme heat/rigidity when the printer follows; PP for selected chemical/moisture cases.
Orientation table
| Need | First reflex | If not enough |
|---|---|---|
| Accessible functional | PETG | ABS / ASA |
| Serious mechanics | ABS | PA6 / PA12 |
| High heat | ABS / ASA | PA / PC |
| Water / chemistry | PETG / ASA | PP / PA12 (case-by-case) |
Quick verdict
Order constraints by priority — then material. The pillar guide ties the network together.
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Material, design, and process must match the real use case.
FAQ
Is “technical” the same as mechanical?
Not always — mechanics is one branch; heat- or chemistry-led parts are technical too.
What about HIPS?
Usually as support, not a primary structural choice — see HIPS guide.