Question about trimmer line welding

[2515R Dude]

I have hasqvarna head.

 

[2515R Dude]

Ok, after overnight soaking the string in water, today i ran two spools worth of cutting .
The welding-melting happened only twice and it wasn't the string/head/trimmer fault. Ones i attacked a very heavy overgrowth too fast and another time there were thick twigs in the grass i did not see.
Looks like the trick works
Thank you guys, i knew i could find the right solution from you.

 

[ning]

Curious situation; it sounds like it's related to ultrasonic vibrations moving up the trimmer line into the spool and presumably the vibrating lines against each other causing heat.

 

[2515R Dude]

Curious situation; it sounds like it's related to ultrasonic vibrations moving up the trimmer line into the spool and presumably the vibrating lines against each other causing heat.

Yes, i red about it, but the question is, why the dried strings are more sensitive to it.

 

[ning]

Yes, i red about it, but the question is, why the dried strings are more sensitive to it.

My guess is the dry ones are rougher and more susceptible to friction-induced heat.
Also, apparently the string does soak up some water, so perhaps that extra bit of water in them keeps them from heating too much... for a while.

 

[2515R Dude]

Today i tried a cheap no name no brand string which i could not use at all. I left it overnight in the water and today i ran a full spool cutting and trimming without a single issue. Who would imagine such an easy solution.