Finishing flexible TPU

[rhoded]

I was wondering if anyone has any tips regarding finishing flexible TPU filament. I have some clear TPU and I want to see if I can make it crystal clear by some kind of sanding or chemical (I have XTC3D but as it is a resin, I'm pretty sure that it will take away the flexible nature of it when hardened). Otherwise, what I've been using, Fillamentum's clear FlexFill, prints fantastically. It had a little trouble sticking to the bed probably due to a bad calibration but the job still finished and was nice and flexible!