I got my order of Stewmac toys the other day, so I got around to refretting the Stewart. This was my first attempt at pressing in frets, and I'm very happy with how it turned out.
I tapped each end of the fret into the fingerboard with a plastic headed hammer, and then used the press to press the frets the rest of the way in. No fret damage and all the frets seated properly. Then I trimmed and filed/bevelled the fret ends.
After fretting was complete, I glued the neck to the body.