How do I fill whole object with colour / texture

The biggest drag I have with SU is I cannot for the life of me find a way to fill an object with a colour so I don’t get the hairlines around the edges from edges. So I make a cube ( light grey colour ) before grouping or anything I bound box around it select say black from fill pallet and click which now fills the cube black so it seems. If I cut the top off the inside of the box is still light grey and hairlines of the grey are seen at the edges of the black cube which also outputs these lines seen in my final file. If I right click with the cube selected and select options ’ select connected faces’ or ‘select all connected’ then paint black still the inside grey is there and the hairlines. If I select whole cube and go to ‘entity info’ it shows fill as black, if I click one face and go to ‘entity info’ I get black fill and second swatch next to it which is inside grey I can drag black to the next swatch and this solves what I want to do ( for that face only, to do this around my whole shape is tedious). It seems it is a common need to select an object of multiple faces and want to re colour it. Although I don’t need to colour the inside faces as they are not seen I will get hairlines if i don’t … can anyone shed any light on this its very frustrating!.. many thanks

It’s hard to suss out from your description exactly what you’re describing but it sounds to me as if the back face color is bleeding through at the edges. If that’s what you’re seeing, it is related to your graphics card. You can reduce the effect by changing the back face color to black or very dark gray.

If I’m understanding you correctly, the best course of action would be not to paint the object at all before you’ve either grouped it or made it into a component. Using the paint tool on a group/component will paint the back faces the same colour as the front…so you won’t get those hairlines bleeding through.

If you simply have to paint faces individually (rather than group/component paint)…because, for instance, you need a wood grain running in specific directions on different faces, then there is a tool in the UV Toolkit plugin which will transfer front face materials to the back face…and vice versa.
Painting an entire group or component will paint any faces (front or back) that are still using the default material with the colour you have selected. Any faces inside that group or component which have already been painted individually will remain unaffected.

setting your ‘Edge’ Style to ‘by Material’ will alleviate what I think your referring to…


You can also use/create a style with edges and profiles turned off.


I don’t think it’s actually the lines that show up. I think it’s the very edges of the interior faces.
You can try this to determine which.

  1. make a simple block with a few push/pulls into and out of it to give you a blocky simple shape.
    2.Select all…including the edges and paint it black.
  2. Orbit around until you get the undesirable effect.
  3. Now try different line styles and see if it makes any difference.

It didn’t when I tried it…but the problem disappeared when I used the Frontface Material to Backface ruby.

Thanks Alan this has solved what I was trying to do and thanks everyone else…!