Why is cura 15.04 causing this bad edge print?

[spikee 0]

I have printed a few files with cura 15.04 lately and i have been experiencing bad print quality for a while.

Settings:

Layer hight: 0.2 mm

Shell thickness: 3 mm

Enable retraction (true)

bottom/ top thickness: 3 mm

Fill density 50%

print speed 50 mm/s

support type none

platform adhesion type: none

Print pics:

http://i.imgur.com/CXp7Xeo.jpg

http://i.imgur.com/tohVJwh.jpg

http://i.imgur.com/I5FUkv8.jpg

http://i.imgur.com/ZVwv5Rl.jpg

http://i.imgur.com/WXawIJe.jpg

http://i.imgur.com/ogFC7WV.jpg

http://i.imgur.com/R3p2tPW.jpg

The straight lines of the wall make the parts pretty weak. Epoxy on top/bottom is needed to make it really strong.

Old prints with cura 14.01 did a sideways top line over top/bottom to make it strong:

http://i.imgur.com/ceb3aoU.jpg

http://i.imgur.com/U0obvl8.jpg

This part does not have the same settings but still , much better top/bottom print.

Is this a bug in the new cura or am i doing something wrong?

I have a Ultimaker 2 , printing with 3mm PLA.

Thanks

[spikee 0]

Adjusted all my belts and found out the warning about thickness not being multuple of nozzle (0.4mm). Now works fine.

[nallath 1,117]

Also note that white (PLA) is not the best material to print with.

[ultiarjan 1,222]

IMHO that varies from brand to brand. .. cheap Makerpoint white pla prints very nice