Back up and running! 3d printing filament maker
https://youtu.be/tT01-8p5XvI
Made something like this a while back, reemed an nozzle out just a little, kept feeding the hot nozzle PLA waste which formed and flowed, was then cooled as it dropped and then spun on an old reel. Worked fine for me 
What is your min and max observed filament diameter? (ie, how much variation are you seeing).
Now that’s the question, it was just a hack I’m seeing at least +/- 0.4mm or so, used one of my CNC drillbits to reem out a little and it was an old used nozzle too. I think what’s needed is a longer hotend(stainless steel tube and a bit more compression from a hopper) but just a thought for much longer use if you were to be making a few reels a day… I got the idea from how they extrude carbon nano strands but they use a fluid to cool while winding it on a reel, PLA and such if fine with fan type cooling.
*Nice project dude