Here was the first try.

Here was the first try. This is what happens when you run one unattended at the end of a rather stiff spool of PLA.
Second try was successful, but required a lot of babysitting (manually unreeling a couple of feet of filament every 20 minutes.)

Return of the spaghetti monster

@Eric_Moy May He touch you with His Noodly Appendage.

It’s a Christmas Miracle!

LOL with meatballs!

He’s using the “Angel Hair” plugin.

Feed issues? Try using a spring with a circular wheel bearing, in a custom housing.

What bot?

printrbot plus (first gen), indeed, the reel got stuck for a few layers and then started letting go again,
As I said in the post, stiff, improperly stored filament…