3DEnthusiastNewbie

I've recently had a prototype 3D printed in Ultimaker Nylon. Overall I'm impressed however there are a few areas that have what I think is called 'stringing' or 'later lines' creating some areas that are to the touch and visibly 'rough'. There are visible strands of material in some areas. Wanting to create smooth surface with this material to create a finished consumer product with 3d Printing. Looked into XTC 3D - the manufacturer confirmed their product will not adhere to nylon. Ultimaker Support (Great by the way!) - said in-house they use a heat gun/solder device though they don't have much experience post-processing nylon. I'm also wondering about sanding (such as with dremel tool) along with if any type of urethane/epoxy/resin might work to 'fill in the gaps' for an overall 'finished look. Anybody share their experiences here/best practices? Thanks in advance.