: Those pics look like just dull, sanded high spots to me.

: How well is the epoxy sanding? If the epoxy isn't cured 'hard'
: (this can take days of warm conditions after it is cured 'to the
: touch') it will sand to a 'rubbery' surface (and clog sandpaper
: like crazy). That will make the sanded spots look 'white'.

: Sanding with dull paper can heat the epoxy and soften it, and
: result in the same 'white' look with dust mixed with softened
: epoxy.

: Cheers
: John

That is what the photos suggest to me - epoxy sanded before it was cured enough. Did the sandpaper clog easily while you were sanding?