HoverAnne

Hello, I have attached a photo . I hope you can see it ok. The print worked fine until about half way through when it went all blobby. I had left it to run over night, so I wasn't sure what had happen to it. I wondered if the PLA hadn't had time to set between layers as it was very narrow cross section. So the second time I ran it with a much slower speed, and during the day. It was all fine until about half way through I found the print head grinding itself against the top of the print, with PLA being squished out the sides, as if the bed was not moving down? So I stopped it. It is from a CAD file I made myself on Inventor so am going to try and resave the gcode again using all the standard settings and see what happens, but if someone can point me in the right direction I would be grateful. Many thanks Anne