I have a Mass Portal Grand Pharaoh XD 40 (Made in Latvia), that has a bed of 400mm diameter and can print up to a height of 400mm, that I bought because it can print to a large size, but have struggled relentlessly, often ending up with a pile of spaghetti.
In desperation, I take time lapse movies + photos incl. thermal images to analyse and send out to support in Latvia.
This build is a mounting bracket with a flat base approximately 200mm square, material is ABS.
Latest issues have been to get the first layer to start on the BuildTak, with the machine calibration utility only providing relatively crude adjustment, then me twiddling the three thumbscrews for ages to get the bed suitably level and having to lower the first layer too much so it all takes without lifting in the middle at some point (I have loads of time lapse movies of this happening).
So, with a successful (very thin) first layer, I left it printing over night, but in the morning, find a pile of spaghetti waiting for me.
The bed temperature should be set to 110c for ABS, but because of experience on other large prints, I have reduced this to 90c, with the nozzle at the recommended 240c
On the time laps, you can see it going wrong at what appears to be layer 3 with one corner lifting, so presumably this is warping, but with layer separation?
This forum site did not allow me to upload the movie, so I have put this + a selection of other images & the factory file inside a Zip file on this dropbox download should anyone wish to look (158Mb):
https://www.dropbox.com/s/urcb6kys4zg41 ... 3.zip?dl=0
All thoughts gratefully received: