Been there done that, sanding not good enough for me, get a heat gun and an exacto with a #11 blade and heat the epoxy up right to the point where tiny bubbles form, then take your exacto pop a bubble and peel the epoxy off like a banana, there is not a bait that i can't strip down to bare wood doing this, poes, bagleys, rapalas, you name it even regular auto clear bubbles up and you can remove it this way!!