For Rufflerfüsschen especially since this was my purchase concerns:
Unfortunately, there are instructions on how the Ruffler is used (in German also tucker), only in English. This is also not well illustrated. So you have the exact setting and adjusting the Füsschens (actually already more of a foot, as great as he is) together look elsewhere. I have some videos for keyword Ruffler on Youtube very well helped.
And then there is the principle: to test yourself what is possible. I must note here that I, unfortunately, unfortunately, can not use the little feet in my W6 sewing machine - simply because they sew too fast, and you reach immediately to high sewing speed even with only minimal pedal pressure. Thus the Ruffler is probably not clear.
In the privilege, however the foot works quite well, because then I can also sew slowly.
What is difficult is a broad band with the Ruffler fold exactly in the middle. It is in fact not easy always to sew exactly centered, as the Ruffler already back quite violently herruckelt when folding Place. It is easier, however, to make the side of a ribbon wrinkles, for example for a hem frill.
Overall, a highly recommended set, with the Ruffler crowning. Will it soon determined to use for a larger project, and then no longer have to gather sore fingers me! :-)