I learned a few things watching the video. Yes, cleaning them is a great idea, I will do that from now on. To oil or not to oil?? I never used oil when I was using Pacer Hinge glue, I do oil when using Gorilla Glue!! It makes clean up easier when it expands into the hinge center. No, I don't bother with oil when using epoxy, what was shown works very well, epoxy sets up brittle and will just snap out of the center.
Jim also hand drilled the holes, get a hinge drill guide! ARFs have very little wood for a TE and LE so no big problem but with a kit or scratch built plane it is normal to add some wood where the hinges will go into for more strength or meat to hold the hinge into.
I am not using epoxy for my pins these days, if from test fitting the hinges the holes get a bit loose then I use Gorilla glue.
I go into Walgreen's drug store and they give me free syringes without a needle used for things like flushing ears and stuff? I put glue or epoxy in those and squirt some glue into the holes, just cleaner.
I have never roughed up the hinges either but that is something I will be doing now too, cleaning and roughing. I will give the tape a try too. I felt he did everything very smart, I like smart, it's much cleaner then stupid. If you using epoxy give the no oil a try on a couple of hinges and see what you think. I think he did it smart and clean!!