Does this means I NEED an enclosure?

[lordbinky]

So this print failed at about 90%, it decided to detach itself from the bed and make spaghetti with the last 10%. I'll likely reprint the top and just abs juice it together.

Ah yes, back to the original question. The print went great for quite a few layers.

Bottoms Up

Then it tried to make like a banana.

It cracked up too

Deep down though, it was beautiful on the inside...The bastard.

The inner-self

So I assume the problem is cooling related and would be resolved with making an enclosure of some sort. Can anyone tell me if that is a correct line of though or is there something else causing this split personality in my print?

[MDMD]

I'm curious about this too as it has been happening to me on large prints.

[Flateric]

I'm thinking you are running your extrusion temp too low for the speed your printing or just not high enough for good inter layer adhesion. Bump up your temp 5c.

[Polygonhell]

It's fairly typical for ABS to delaminate like that. Your options are print hotter, though you're limited in how hot with the stock Hotend, or reduce the density of the infill and loops. Basically the denser the layers the greater the warping forces.
The easiest solution is just to print it in PLA.

FWIW I'm currently printing ABS at 250, and it pretty much resolves the delamination issue, but don't do that with the stock Hotend.

[lordbinky]

I'm printing at 235ºC on an E3D hotend so I can go higher. I guess I need to go through and do a temperature calibration print.

It makes me curious though, is the inside not delaminating like that because it doesn't have any material to block/resist it's shrinking? Then I also think it is odd the base didn't delaminate for many layers even though it was relatively more solid (having a higher % of it's layer be solid loops than infill), so I'd think* those bottom layers would have more force to delaminate than the higher layers with higher amounts of the less dense infill. I guess that must be the hot bed doing it's job though.

*I'll be honest, never made it to a second thought to correct myself, and I've hit the 20hr should have gone to bed already point...

[Flateric]

I think the base isn't as prone to delamination due to it's proximity to the build plate. Double checking those photo's you are going fairly dense on the infill without any doubt. could easily get away with 1/3 that amount IMO.

But I certainly feel your pain, I have a number of really nice prints that were aborted after many many hours to my great disappointment.

I have saved one or two that had very very slight delamination through vapor polishing, but not as bad as your level of seperation can be saved like that.

[img]http://i.imgur.com/Ti4ju3a.jpg[/img] [img]http://i.imgur.com/jWLN10s.jpg[/img]

[img]http://i.imgur.com/om20b97.jpg[/img]

[lordbinky]

Yeah... there are still many untouched issues I need to get a feel for much less actually adjust for, or use slicers other than kisslicer for that matter.
At .2mm layers (.4 nozzle) I have only gotten abysmal bridging and less than 50% infill results in bubbled surfaces. My new set of nozzles are at least in the same city now!* So I’ll have even more variables to sort through soon…. Yay!

*My lazy postman doesn’t knock on the door to deliver a package, they just leave a slip saying they tried and I can pick it up the next day… What pisses me off about that is if they know they aren’t going to try to actually deliver it, they shouldn’t take it with them. If they would just leave the package at the post office, they could deliver the pick-up slip and I could actually receive the package that day from the post office instead of wait until the next day for them to take it from the truck back into the post office. At least it’s not a mystery why I avoid USPS anytime I have the choice…

[kbob]

It would be nice if you guys could post Thingiverse URLS or numbers when you show those cool objects.

Thank you.