"wall cave in" is what jechsturk replied to your very first post Ronan. He called it "elephant foot". It is caused by the bed being too hot. When printing PLA it cools extremely rapidly as it comes out of the nozzle shrinks within milliseconds and acts like a liquid rubber band for a short period before it freezes - like snot. So corners are pulled inwards hence "wall cave in". Simply lower your bed temp another 5C to 55C and this should go away completely.
Getting your part to stick is best done with brim but if you don't want to use brim just loosen the 3 screws on the bed 1/4 turn (.025mm) moving the bed closer to the nozzle slightly. Possibly also start over with the glue - you want a very thin layer of PVA and dust may have accumulated over the past few days.
It really sucks that I can't see any of your pictures except for one now - it's really best to use the "image gallery" button (2nd from right) above where you create the post and not "add external image". It's also a bit rude to post a photo from some image website that may drop the picture after a few days/weeks/months/years whereas Ultimaker will host your photo as long as they host this topic.
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yellowshark 153
Ok, all I can say is that my personal opinion is that 60 is not to hot. I always print at 65 and have never experienced wall cave in. In the early days I did try 60 but found that larger pieces, footprint at least a third of the bed size, suffered adhesion so I changed to 65 and have left it there for the last 2+ years. Every new filament I try I always print a variety of test cubes, 10mm or 20mm, to establish the best settings, including straight vertical edges, and they always are.
Irrespective of whether they solve your wall cave-in you will help yourself generally if you standardise your print speeds for small models (if you can get 5 on a bed I count those as small), don't blast you fan on at 100% at .5mm height and get your over high extruder temp down.
Let's hope you <60 bed temp solves it
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