Hello,
thank you very much for yours advices in this forum .
I read you passionnatly.
I repart, and work with some beautifull sewing machine also
So, yet, i would ask to you somethings
A)
I have an adler 669
and it is painful to fix it... my stitches are irregular
as you can see :
I removed :
1) bobbin case (for new one, with good spring)
2) new bobbin
3) new hook
4) cleaning each tension disk
5) when i pull below string, there are not too light tension not too hard tension, without irregular tension (good slide between metal part and string)
6) Tension top and below arenot too much
7) Tension on the top, not irregular also
8) check Spring
9) All is clean
10) Leather completly homogeneous
11) Thread that is good wound on the spool.
i have other 669 adler, with the same string (size) and the same needle, with very good result
i really don't understand with i have this result...
i read also the 16 advices from Wizcrafts (thank you for it) but no results...
have you got an idea ?
Thanks a lot to read me
Julien