woke up to this...

[whaleboy]

had a print running all night, and woke up to this...

Most of the print was fine, but apparently stopped at a certain height before it was done as all parts look like they were chopped off. There was a spaghetti mess on top of it all. I'm guessing I had a temporary clog, so a few layers were missed, then the plastic came flowing out again but with nothing for it to stick to?

I heated up the nozzle and the plastic (PLA) seems to be flowing fine.

-David

[geneb]

You had one or more parts come free from the bed during the print job. What are you using to hold the parts to the bed and what temp did you heat the bed to?

g.

[whaleboy]

You had one or more parts come free from the bed during the print job. What are you using to hold the parts to the bed and what temp did you heat the bed to?

g.

All but one small part was stuck like glue to the plate. Seems odd that that one part coming loose would effectively prevent all objects from finishing. Finishing badly, maybe, but i would expect some of the object on the perimeter to at least get some plastic on them, instead of looking like someone took a knife and sliced off the top of the entire bunch.

Bed runs at 60, using hairspray. Sticks quite well (PLA).

I had another run, a single different part go bad on me. I noticed that the supports that Cura makes are very thin and small. The supports look like they were not getting plastic... you could see the support get thinner and thinner until it kind of just ran out. A little higher and it started to push plastic out for the support again, but with nothing to catch on it just cam back and started blobbing up the main structure. I was watching when that started to happen. As it was trying to print the little support, it would move, doing a retract, try to extrude a little bit of plastic, retract and move back. The main structure was very thin here, and as it was bouncing between the main and the support, the filament wheel was getting jerked back and forth... I'm wondering if it was having trouble with the tiny extrude/retract cycles happening too fast and the heavy (new) kilo spool was giving too much resistance and not feeding the very small and quick extrudes for the supports. I'm now talking about a different print than pictured... Maybe I'm just coming up with a wild theory, but as I watched that print go south and how the spool was acting, just seems like a logical explanation (on the pictured print, who knows?). Last night I took some Teflon sheet that I have and wrapped it around the spool holder, now glides silky smooth. I also took a little bit and stuck it on the perimeter of the feed hole in the top plate. The plastic was hitting that hole at a pretty good angle (coming from the center side of the spool), and then exiting into the extruder at the opposite angle... I'm sure that was adding some resistance. It does feel a lot smoother than it was...

-David

[geneb]

All it takes is one part to come unstuck to ruin a plated job like that.

g.