What is an important step when taking a part out of the granulated material used in binder jetting or powder bed fusion machines?

Removing the powder with a brush and vacuum is an important step when taking a part out of the granulated material used in binder jetting or powder bed fusion machines because it ensures that any unbound or excess material is thoroughly cleared from the part. This process is critical for achieving the desired surface finish and dimensional accuracy of the finished part.

In many additive manufacturing processes, particularly those involving powders, unremoved powder can negatively impact the part’s structural integrity and appearance. The use of a brush allows for more precise removal, particularly from intricate geometries where powder might be lodged, while the vacuum helps to efficiently collect the excess material without causing damage to the part.

Other methods, such as rinsing with water or shaking the part, may not be appropriate for all types of materials or configurations, as they could lead to issues such as surface degradation or incomplete removal of the powder. Allowing the part to air dry might be relevant in specific contexts, but it does not directly address the immediate need to clear the part of powder before further processing or handling.