Printing but not sticking to surface

Vertex 3D Printer Vertex - Issues while printing
1

All along to lunchtime yesterday I had no problems to get the filament to stick to my heat board. Then suddenly, bam, massive problems.

Suddenly there is no stick at all.
With the same filament as before lunch I can get no stick at all. Same extrusion temp as earlier 170 degrees.

Tried the following:
Cleaning the build tak with acetone.
Thin layer of Pritt glue stick.
Change of temp 40-45-50 degrees.
Blue tape on the heated board
Printing at another position on the board

Whatever I print it ends up like a small blob beeing dragged around by the nozzle.

Any suggestions ?

2

Put your printbed a little higher, normally a double folded standard paper is the 0.2mm as documented.
I on the other hand have it somewhat lower than 0.2 more like 0.1 in the middle and 0.2 on the edges (curved alluminium build platform is the cause)

If I where you id turn the 3 wheels 1/4 of a turn and try again. Untill it keeps sticking.

Greets
JeAfKe

3

Stupid me.
Why did I not realize that myself…

Thanks !