This is an adapter that allows you to hook up Trailer from Transformers Energon to the Seige Optimus prime. The Futuristic Trailer design blends in with the Cybertronian Truck design. Optimus can pull battle master reenforcements onto the battlefield with this upgrade. The Adapter can also be used to hold Seige Optimus Prime's Axe or a Battle Master.
This is intended for adult collectors. This is not designed for rough play by children.
This was tested with my home printer, printed in PLA plastic. When fitting the part press firmly and evenly. Depending on the plastic you choose, sanding or polish may be needed to fine tune the fit.
This has been successfully printed in Shapeways natural Versatile Plastic.