Model turning to "mesh" with Flashforge Finder

[stargatedalek]

About two weeks ago my Flashforge Finder arrived, and it was working great until a few days ago one of my prints failed, about 3/4 through it suddenly became "mesh-like" and "incomplete". At seemingly arbitrary points during a print the printer will do this same process repeatedly and has continued doing so up until now. I did some quick reading up and the symptoms (so to speak) sounded similar to ones described when PLA was applied to hot, but adjusting the temperature didn't change the results.

I'm currently printing the 20x20x20 test cube, but I don't expect that to show anything useful.

Both models pictured (and others tried) worked both for myself previously and for other users.

I haven't yet used any filaments besides the ones supplied with the machine.

I've printed smaller and more detailed models with this printer before.

The extruder gear has been checked/cleaned, but I haven't found any guides for checking and/or cleaning/removing the nozzle for a Flashforge Finder.

Adjusting the temperature, fill %, walls, and build speed made no changes.

The rafts showed no warping and support thickness did not change results.

I can't tell if the spool is feeding correctly or not for certain from the default "backpack" housing, but it isn't making any loud sounds as it feeds and I can still pull it out with minimal force (albeit it feels like it's resisting). Regardless I can't print an alternate spool holder if this one isn't working.

http://img08.deviantart.net/7c1b/i/2...ll-dab4xup.jpg
http://img03.deviantart.net/2379/i/2...ll-dab4xt2.jpg

[stargatedalek]

Update: 20x20x20 cube failed, it layed down a very fine layer of filament and then stopped applying it. When I came back to check it was still trying to complete it hours later (this should have been a 45 minute print) but a "cap" of PLA had formed over the nozzle.

http://img06.deviantart.net/66d9/i/2...ll-dab6pfo.jpg
http://img06.deviantart.net/6da2/i/2...ll-dab6pct.jpg

[stargatedalek]

Update: Fixed broken images.
http://img09.deviantart.net/37cf/i/2...ll-dab6pfo.jpg
http://img02.deviantart.net/c61b/i/2...ll-dab6pct.jpg
http://img11.deviantart.net/9275/i/2...ll-dab4xup.jpg
http://img10.deviantart.net/c551/i/2...ll-dab4xt2.jpg