Valve engineers have indicated that there are currently no specific plans to release additional custom faceplates for the Steam Machine beyond the two included with the two-terabyte model. The existing faceplates feature a red fabric and solid walnut design.
Instead of producing more official options, Valve intends to support user customization by releasing the necessary CAD files and dimensional data for the device's exterior. This will allow individuals to design and create their own faceplates. "We want to make sure that third parties can do everything they need to there, and that people tinkering at home can also do that," explained Valve engineer Pierre-Loup Griffais. "So, like usual, we'll be releasing all the CAD [3D files] and the dimensions for the outside, the attachment points for the magnets and the sizing of all that so that folks can make their own stuff."
This approach mirrors Valve's strategy with the Steam Controller, for which CAD files have already been made available to facilitate customization. However, Valve has not yet released these files for the Steam Machine.
Despite Valve's lack of official offerings, some third-party companies have attempted to capitalize on the customization aspect. Notably, accessory maker Dbrand had teased custom Companion Cube housing for the Steam Machine. However, they have since begun issuing refunds for pre-orders after it was revealed they had not obtained permission from Valve to produce and sell the product. According to Valve, while personal, non-commercial creations are unlikely to face issues, commercial sales of unauthorized designs will not be permitted. This was the reason Valve requested Dbrand's custom housing be taken down.