Now I have this to an empty bobbin - wound thread - to 0.2mm stronger. It was a bit tricky, because the tension of the yarn is still a lot bigger, but it works. Now I hope that these stronger yarn less rapidly consumed, and that the device can finally be put to good times.
In any case, the material of the yarn makes a much more robust impression and can be cut much more difficult ... in the larger cross-section actually logical, but already a good sign.
It should be remembered that the use of stronger threads has its limits, however. 0,2mm more thread cross-section with my coil was possible, but that's about it!
After the first use I will update this review.
Addendum 13:05:14:
Now, after the first use I can say that the transition has clearly paid off and proven on the stronger thread. Not once (for about 15m Rasenkante) I had to readjust the thread.
Only - and that was my mistake - I had the first thread upside wound so that it is self - has pulled out and rotated the coil - due to centrifugal force. Here one must look at the pickup coil, to see in which direction the yarn has to be wound up. You may abgucken the original course.
This trimmer line is definitely recommended!