Question 1

Why does TC Precision use green-light lasers for copper 3D printing?

Accepted Answer

Pure copper reflects most of the 1064 nm infrared energy used by standard fiber lasers, which leads to unstable melt pools and porosity. A green laser (around 515 nm) is absorbed far more efficiently, producing denser copper parts for heat exchangers, induction coils and electrical conductors.

Question 2

What tolerances can you hold on CNC machined and 3D printed metal parts?

Accepted Answer

Unless otherwise specified, machined features follow ISO 2768-m. Critical CNC-finished features can reach ±0.005 mm depending on geometry, material and part size. As-printed metal surfaces are typically ±0.1–0.2 mm, so we machine critical interfaces such as bores, sealing faces and datums after printing.

Question 3

Is there a minimum order quantity?

Accepted Answer

No. We support single prototypes, engineering validation batches and low- to mid-volume production runs, and recommend the most economical process for each quantity during DFM review.

Question 4

Which files should I send for a DFM review?

Accepted Answer

Please send a 3D model (STEP, IGES, X_T or STL for printing), a 2D PDF drawing with tolerances and GD&T, the material grade, surface finish, quantity and target delivery date. An NDA can be signed before files are shared.

Question 5

How are parts inspected and shipped to overseas buyers?

Accepted Answer

Every order is dimensionally inspected against your drawing, and inspection reports and material certificates can be supplied on request. Parts are packed for export and shipped by international express courier, air freight or sea freight to customers worldwide.