scrapers are usually the tool of choice for this job, but my prestained presealed panels get nicked on the edges and the stained surface slightly shaved away when the scraper bumps over glue bumps, dribbles etc.

(if i had half a brain, i’d clean it up better before setting )

but panels are already flat at least in one direction and it just so happens that flat files are flat also.

i wrap one layer of tape over one end so that part of the file can slide one layer of tape thickness over the surface without scratching/filing and then work away on the blob or what ever just elevating the near file edge above the surface as well. actually can work fairly hard at it as the blob raises the file angle anyway.
works best near joins of 2 surfaces, and works with care pretty well on convex curves. use a file card to cleanout the epoxy, esp. if soft.(6” and 8” files)

no good on inside joins with concave surfaces like the inside of the yak. but scraper will be the tool to use.