Using DMLS aluminum parts is becoming a common step before full-scale machining, but there are areas you need to treat with caution. DMLS components can handle realistic pressure and temperature loads, but only if the printing is top quality, from a really reliable supplier/operator. When hot isostatic pressed, the T6 or equivalent heat-treated AlSi10Mg can achieve 90–95% of the tensile and yield strength of wrought 6061-T6. Fatigue performance is poorer, however. Remember that you cannot typically certify DMLS-made parts. You’ll also need to specify CNC machining of critical sealing or gasket surfaces to deliver seal-capable dimensional accuracy.