PA12 is the most-specified 3D printing nylon. Tensile strength ~48 MPa, impact resistance good, dimensional stability excellent. Glass-filled (PA12 GF) available for higher stiffness.
We're writing up the full technical documentation for this service — cutting parameters, material specs, tolerances, typical applications. In the meantime, if you have a specific part in mind, the fastest path is to send your drawing and we'll respond with a technical feasibility review in 4 hours.