Model not watertight - struggling to remedy

[TheJellyBaby 0]

Hey all, 

 

I'm trying to a joystick in segments. I've split the object into constituent parts however when I go print my part Cura shades a number of faces red, highlighting an error. After searching this forum I tried the following suggestions;
1) Downloading Mesh Tools from the marketplace and patching it up that way

2) Importing the model into Blender, using a 'Make Solid' modifier to watertight the model

3) shouting expletives at the monitor

 

Unfortunately none of these remedies have worked. I'm now at a loss! Cura is still telling me the model is not watertight but unless my eyes are deceiving me it most certainly is! I attatch some images below. I'll also attach the file. 

 

Any ideas comrades?

fixedmaybe.obj

[Dustin 129]

So the red your seeing on the bottom surfaces is UltiMaker Cura telling you where support is needed or recommended (this can be auto generated by the slicer)

The other reason your having issues with this model is because it essentially has zero thickness to it. 
You will need to give this shape some thickness to actually print it.

[TheJellyBaby 0]

25 minutes ago, Dustin said:

So the red your seeing on the bottom surfaces is UltiMaker Cura telling you where support is needed or recommended (this can be auto generated by the slicer)

The other reason your having issues with this model is because it essentially has zero thickness to it. 
You will need to give this shape some thickness to actually print it.

 

I raised the object to show the red faces off. When I slice the object on the floor it's only able to generate the first 5 layers because of the unresolved issue. I'll attach an image below. 

I added thickness in Blender - 4mm. It didn't fix the issue - still claims it's not watertight. 

[Dustin 129]

hard to tell anything by just the screen shot.. but it looks like the model still has no thickness to it.

[dioo 0]

You need your model to be a solid, not just a surface. It must have a second, "inside" parallel face for every face of your shell.

If it's not that, look into possible model problems. In Blender, select your model, go into edit mode and use the Select -> Select All By Traits tools (Non Manifold, Interior Faces, Loose Geometry, etc). There are Youtube videos explaining how to use the tools and how to fix the various problems.