I have ordered a number of your TFP items, and this is easily the most impressive to me. Mine arrived today (in red strong flexible polished) and I am amazed at how refined its design is. This looks like a store-bought accessory with its symmetry, perfect fit to the figure, and there are no ridged printing layers to be found anywhere.
I recently made Megatron's shield, and when it arrived in white strong flexible and polished, the ridges between the layers of 3D printing that form the curved face (like on yours) were incredibly evident. I would be forever in your debt if you were to shed the slightest ray of light on how your curved faces are so smooth while mine are not.
Thanks for another fantastic accessory.