looks like itll work fine. rats are fast and easy to scrape. cant tell the length from the pic. some people put the bottom of the beam on the floor and lean it against your table. others would set that beam on their chair and sit on it, with it sticking out between your legs, and bend over and scrape that way. some guys are really fast that way. if you need to do any more shaping on it, like rounding the edges off more, borrow a power sander from someone. save yourself some work.

As mentioned, not a lot of scraping required. I made one a few years back for mink and/or rats but not necessary.

Fleshing Rats, Mink, Marten, Weasels and Squirrels

Use the broad you will stretch the pelt on, or if using wire for rats use a small rat board to flesh on. Pull the pelt on so that you can flesh the side and then flip the broad to do the other side. Then straighten the pelt out so you are ready to tack the pelt on the board. Then finish the belly and back, leaving the saddle membrane on the pelt, except mink if it has a lot of fat under the saddle.
A curved small pelt (stirrup) flesher is the ideal tool for the fleshing of rats, mink/marten and other small animals when using their forming boards in the fleshing process.