Hello gr5,
Thank you for your reply. I have tried your temperature check but I get different results.
My ABS does not melt as 'creamy' as yours in the video. Therefore it is not simple to compare the results. The ABS I use came with the printer 3 years ago. It is brittle and not as tough as the PLA that I use. Perhaps it has taken up moisture.
Only at 260C I get sort of the same result that you get at 220C, but I should be careful not to jump to conclusions; your ABS is clearly different. I think I should check with my supplier whether my ABS is stil OK.
Thanks for your tip on the heat. Having solved the cold bed adhesion stil leaves the printing ambient temperature low. A heated bed solves that too.