Okay thanks. But now I use alcohol ketonatus 96%. It sells for €10,- per liter over here. I not only clean the shafts, but also the base of the feathers. After that I take a cup of coffee to let it dry.
The most difficult part is the beginning. I used some nasty words here.... But once the backing is split from the tape, I leave a bit backing on each time. That makes it very easy to split the tape from the backing.
After one shaft is ready, I run with my thumbnail over the quil. Then, just to be sure that the tapes makes contact everywhere, I rub over the lenght of the feathers with a (clean
) handkerchief, pressing the base of the feather to the shaft. The feathers just pop back in shape. Some glue at the end and beginning of the feathers, and they are ready to go!