I bought a new strimmer last weekend and used it agressively today, revealing a once grass-covered pathway that I hadn’t seen in years and edging the parkway in front of my house very neatly. Naturally, I exhausted the line on the spool. I bought refill line and wound it onto the spool. It seems to work better than on my previous strimmer, which would jam or break every couple of minutes. I took more care than in the past and I very carefully and snugly wound the line, trying to minimize crossings or loose areas. I’ve seen a recommendation to soak the line to make it more pliable. I’ll try that next time.