Weird slicing of model

[JohnK 30]

I'm trying to print the following file and am having a problem slicing it in cura 15.04.2.

http://www.thingiverse.com/download:591243

It's evident from the first layer, the circle around the outer edge start off printing in dots and dashes with gaps in between as can be seen here and then get printed over with the full circle. The problem continues on throughout the model.

I've tried slicing it with simplify3d and the problem is not there.

Anyone have any idea on what is going on here ?

Edited September 9, 2015 by Guest

[Labern 775]

Those dots that you talk about are they the yellow ones in the picture above?

These are infill layers, in cura 15.04 the infill is put down before the outer layers.

increase your bottom layer thickness to 0.3 as this will help solve all those travels on the first layer.

[JohnK 30]

Those dots that you talk about are they the yellow ones in the picture above?

These are infill layers, in cura 15.04 the infill is put down before the outer layers.

increase your bottom layer thickness to 0.3 as this will help solve all those travels on the first layer.

 

Yes that's right, the yellow ones around the outer edge. I'm finding simplify3d is just simply printing two shells without doing any of those moves. If the model was thicker, this wouldn't bother me, but it's leaving blemishes around the outer edge since the model is so thin and these moves continue all the way to the top .

I've tried increasing the bottom layer, same problem, changed to infil/outer perimeter order, same problem. The only way I could fix the problem was to change the shell thickness to 0.9 as can be seen here. I understand this isn't ideal but is there any problem doing this ?

[Labern 775]

you can also increase the nozzle thickness.

It will print wider then the nozzle size as it just over extrudes it a bit. This is fine and many people do this to print phone cases.

[JohnK 30]

Thanks for the replies mate. Funny how such simple things make all the difference!

[Labern 775]

Yep they sure do.

Cura 15.10 will have more features in this regard where you can adjust line widths etc.