Infill shows on preview, but doesn't get laid down

[Tiger91]

The problem is exactly what is said in the title. Sometimes, if I'm working on a part, the preview shows infill being laid down, but when printing there is no infill! What causes this and how can I fix it?

[JoeJ]

If the infill is present in the preview, then it has to be a problem with the printer or the filament. Can you post your factory file just to be sure (file > save factory file)?

[Tiger91]

If the infill is present in the preview, then it has to be a problem with the printer or the filament. Can you post your factory file just to be sure (file > save factory file)?

I've uploaded the file - even at 60% infill the actual infill is choppy and sometimes not even laid down. The top shows a lot of very ugly holes. Even when I increase the size they don't go away.
I'm new to S3D so maybe I'm doing the settings incorrectly?
I have a Robo 3D for reference.

Edit: I also noticed that there are lots of retraction clicks when it is printing the top tree part.

[jimc]

looked at your process. few things are probably contributing to this. #1 you extrusion width is set to the same dia as your nozzle. with rectilinear infill, which prints every other layer your infill extrusions are just many little bridges so with your extrusion width set so low your infill will look all broken. bump that up to maybe .45 or higher. #2 with rectilinear infill you should bump up your infill extrusion width a little. this will extrude more material and help with the bridging across the small infill grid. bring the infill width up just a little to 125%. you know your temps on your machine better than any of us but i would maybe consider trying to bump up the temp 10 deg to 220. if you like the square style infill then try grid. its rectilinear but printed on every layer. it will give you less trouble but you will also need to turn up the % of infill to equal the same grid size.

[Tiger91]

looked at your process. few things are probably contributing to this. #1 you extrusion width is set to the same dia as your nozzle. with rectilinear infill, which prints every other layer your infill extrusions are just many little bridges so with your extrusion width set so low your infill will look all broken. bump that up to maybe .45 or higher. #2 with rectilinear infill you should bump up your infill extrusion width a little. this will extrude more material and help with the bridging across the small infill grid. bring the infill width up just a little to 125%. you know your temps on your machine better than any of us but i would maybe consider trying to bump up the temp 10 deg to 220. if you like the square style infill then try grid. its rectilinear but printed on every layer. it will give you less trouble but you will also need to turn up the % of infill to equal the same grid size.

I tried this, but I kept getting the same troubles. It is really irritating, since I just printed the same file on MatterControl (a free slicer) and the top had absolutely no holes.