I can't seem to find evidence of this online or at stores, but iirc, weed whacker line used to come in a lot of sizes smaller than 0.065 inches.
Right now I have two very nice weed whackers, and inside it says to use 0.065" line, and I have a package of blue monofilament labeled .065, but it won't thread into the weed whackers.
I don't mind buying thinner -- I've been using thinner for years now, something clear, but it's almost gone -- but I can't find anyone who sells thinner.
Is my memory playing tricks on me?
Should I go look for fishing line for big fish?