I’m trying to get back into 3d pruning after a long hiatus.
I found my old Anycubic Chiron, and thought I’d give it a go. Smaller prints seem fine. But anything longer than an hour. Come off like this. I say that what I mean is I excitedly take the multi hour print off the bed in excitement and for get to look at how it is.
The two longer prints definitely were at least in part still adhered to the print bed despite it being cold.
My next plan is to set a print away and check on it every hour or so and see if one side of the print has warped mid print (so far I’ve been printing before I go to bed, and only watching the initial couple of layers).
My guess it that the (pla+) filament is warping mid print… Its old I’ll admit. But was stored in an airtight container with silica packs, and I dried it out before using. But any of your thoughts would be greatly appreciated!
Yep, you’ve got some warping, the longer and skinnier the print the more it wants to warp. Pla isn’t too bad for warping typically, but PLA+ is an alloy of pla and petg and is more finnicky. Not nearly as much as pure petg is but the point of it is you get an improvement of the physical properties for only being a bit more fisdly to print. I’ve found age can affect adherence, but only in the extreme, and I think it’s more to do with not being stored dry than age alone. For prevention, there’s a bunch you can do. Simplest is clean your print bed, rubbing alcohol or just dish soap and water have both worked well for me in the past. Getting a more adherent print bed like textured PEI or just layering it with something your print sticks better to like hairspray, painters tape or a layer of gluestick helps. Upping the bed temp can help, I think because you get less of a temperature differential between the plastic coming out of the nozzle and the first few layers so there’s less force pulling on it. You can also add a brim or less recommend a raft in the slicer. Lastly, you can change the design of the part. Making it leas long and skinny and rounding corners helps. On that subject you should seek advice from others, it’s not something I know a lot about.