To reverse a face, right-click on it and choose “Reverse Faces”. Setting a keyboard shortcut for this is a good idea. You can also right-click on a white face and choose “Orient Faces” which will try and orient them all the same way, but it won’t work if you have a non-solid shape like this.
Your O shapes don’t have any thickness. There’s a ring at top that hides the problem.
I have followed your instructions I think. Would you check it for me. I am not sure how I got it inside out or quite what it means but I did as you advised and reveresed all the faces
Each face has a front and a back. You want all the fronts facing outwards. This might cause problems when 3D printing if you don’t. The default backface colour is blue and you still have some blue:
The end face is an easy fix, just reverse it.
The inside of the cylinders is blue because there’s only a single skin with no thickness, as mentioned earlier. You might also need to make the face form at the bottom of the ‘cup’ to make the whole object a solid. I had to do that with most of your circles to make it solid. To force the face to form, draw a chord across it then delete the chord. You could also draw a line over one of the segments of the circle if you’re careful.
I think I have now got all the face in the right direction, I have also made the cylinders have a wall thickness.
I have noticed the third “X” has faces in the wrong direction, I have tried to reverse them and the reverse face inverts. I am not sure what the problem with that one is. I think that is the first one I drew.
I would tidy it up in SketchUp first. Get it reporting as a solid in Entity Info or Solid Inspector. The Xs and Os aren’t equally spaced, one of the Os touches the wall.
When it is ready, I suppose the next step would be to export as .stl and import into your slicer software and have a look at it there. You might find new problems there like the walls are too thin or the gaps between them too small, etc.
@McGordon So I decided to just simpliy things until I understood more. So I did one section of the fen Blank, then I want to print it so that I can get a better understanding.
The X in the box seems to be right, Until you view it from the bottom, its hollow, I am not sure how to make this a solid?
Is there anything else that is not correct,
I will scale it down when getting it ready to print.
You’re almost there, you just need to add some thickness to the bottom.
So use Push/pull to extend the rim, remove the face internally (I’ve done that by selecting the corners and deleting them.
Then delete one edge and the bottom skin will form, triple click one of the remaining edges to select all three and delete.
Then triple click the whole thing to select all and right click Make Group.
Do you mean the Solid Inspector2 extension? It’s in the Extension Warehouse. In SketchUp, open the Extension Warehouse window. Search for “Solid Inspector”, there’s 2 versions, I showed using version 2 but the old one has its uses too.
It would be nice if you posted some photos when you print this.