I've been using 30 minute epoxy. I like the extra working time before it starts to set up. The masking tape "dams" are removed when the glue starts to set up and doesn't run anymore. Don't wait too long to remove the tape or it will be glued to the model!
Wear disposable gloves when using epoxy. Don't take the chance and find out afterwards that you have an allergic reaction to the glue!
After the epoxy fillet has dried some 220 grit was wrapped around the appropriate sized dowel and the fillet smoothed. It shouldn't take a lot of sanding if the fillets went on smooth. Epoxy is fluid and self leveling.