I have said it before. As long as it involves trimming and pressing, it is not good enough. This thread is about felling feet only. Yet people insist on this method.
That 9mm felling foot looked good. Too bad its only made for Huqvarna. I dont understand why theres not a single company that makes these feet in all versions and sizes. No matter what shank etc.
And as much as this seam is used, I dont understand why nobody has made a better attachment for this. Like an automatic lap seam attachment. To feed the fabric into standard sewing machines.
People aren't "insisting" on anything young man. "People" are trying very hard to help you find what you're looking for. Whether you like it or not, the answer is that as of now, there isn't a metal flat fell six or eight millimeter foot that will fit on your machine. That's why "people" are suggesting other options.....because until YOU find the presser foot you're looking for those other options are the only ones open to you, using your Singer.
In all these posts, I've learned a lot about this technique. As with most people who refuse to see the answer that's right in front of them, (including me sometimes) you don't even seem interested in trying the suggestions, if you would, I'll bet you'd be pleasantly surprised.
And anyway, Marius, what choice do you have? Well, yeah, you can buy an industrial feller for over one thousand dollars, or get a home sm that does have that width foot that "people" are trying to tell you doesn't work on all those thick layers of denim.
And, bear in mind that while your machine itself can handle all those layers, even if you do find the foot you're looking for, as these "people" have tried to tell you, the foot may not be able to handle turning all that thick fabric.
This seems like more of a life lesson, and less an exercise about a dadgum presser foot.
Look. For now, the answer to the "can Marius mimic RTW jeans with a flat fell foot that meets his exacting specifications?" question is....no. So, until you do find one, work with what you have. Don't like the traditional flat felled method? Cool. You've been given several other options. Why not try and work with those until you run across the foot you're looking for.
One other thing. I don't recall seeing you at any time offer a "thank you" to anyone that has taken the trouble to help in your search, find and upload photos (and label them), search out and post links, etc.
So, I'd like to say thanks to everyone, including you, Marius, since you got this ball rolling in the first place. I've learned quite a bit about flat felled seams, and how they can and can't be sewn on home sm's.
Not that this is really any of my concern, but your "so what?" attitude at every wonderful suggestion "people" are trying to offer to you is ticking me off.
My thought now is, ok, well, figure it out for yourself then, dude.