Cura shows support but it is not printed on Ultimaker 3

[olubeck 0]

Cura has support structure (see picture), but UM3 does not print it.

I have both extruders on with Extruder 2 as the support.

 

The base is printed (in PVA) but no other support structure is printed.

 

I had a similar problem with another print where the support was printed for about 75% of the layers.

The top layers did not have support event though Cura showed it.

 

Why is this happening? Am I missing something?

 

Olaf

[nallath 1,117]

Do you have an image of how it looks when it didn't print? My best bet is that it's trying to print the PVA, but it has a blocked nozzle.

[olubeck 0]

Thanks.

Yes. That is exactly what is happening. This is my second print with the UM3.

Very surprised that the nozzle would block as this is a brand new printer using UM PVA!

[olubeck 0]

Just wanted to finish this off with a progress report:

 

I had to unclog my UM3 with a needle. 

I haven't had any clogging problems since.