Many of ProtoCAM’s additive manufacturing and rapid prototyping customers use the STL viewer from SolidView.
Although there are different levels of features available for various prices, SolidView/Lite is a good, free STL viewer. Use this to preview any STL files you send to ProtoCAM. (ProtoCAM can create them ourselves from other formats, too.)
Visit the SolidView/Lite website for the download link. A free user account is typically required. Note: SolidView is not our product, although we do use it extensively. For SolidView/Lite assistance, visit their download page or contact their support team.
If you need additional details or want to discuss other formats with ProtoCAM, give us a call at 610-261-9010 or write to firstname.lastname@example.org.