Brush Einhell Lawn trimmer

Conversion for the Einhell grass trimmer to keep the paving joints on my driveway free of grass and weeds.

I used the following as a mowing line:
https://www.amazon.de/dp/B07Y346Z1G/?coliid=I1IZLD838EQ7L3&colid=1AOYAALIMJEP8&psc=1&ref_=list_c_wl_lv_ov_lig_dp_it_im