Hi,

I`ve been getting my printer under control lately and fixing most issues, but one is persistent.

Every 1.5 layers, the pitch of the laed screw, the outside perimeter curls up and doesn't bond with the layer below but it only happens on longer straight part of the print. Around corners the stacking of the layer is normal.
What is especially interesting is, that if i slow down the print below 20mm/s the gaps become smaller, so there is an interaction with the extrusion.

Any ideas?

Here some pics.
http://www.flickr.com/photos/1141765...7639695708276/