Hi bethmitchell and welcome to TechTOWN!
I'm not certain if Rancilio does this, but there is a process of fiberglass spraying when casting plastic parts. The one side of the object will look unfinished, and there's really nothing wrong with that.
It is possible this is what we're seeing here.
Fiberglass spray lay-up process - Wikipedia
What's your concern with the fiberglass? That it does not belong?
I think something has melted and shed/sprayed up on the sides and top of
On Wed, Jun 7, 2017 at 2:01 PM, John B (Parts Town Admin) <root@localhost>
inside? Below the cup holder? Is there a protectice coating on the cupholder?
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