"Ghost layer"

[the_bear_58 0]

Hi everybody.

 

I am new to 3d printing, and I have a problem.
I will print a plate with cutouts for a logo in a different color. See picture "Layer 1". I do slice and that's when the problem appears in layer 5. It creates a "ghost image" there. See image "Layer 5".

It looks like it's going to print a "ghost image" there and I suspect it will take quite a while to do so.

Why does this happen and how do I get rid of it?

Please help me.

[Slashee_the_Cow 480]

By the looks of it, your model becomes solid at that point and it's filling those areas with skin (what's going down everywhere around your cutouts on layer 1).

 

If you could share your Cura project file (.3mf, in Cura get it set up then go to File > Save Project) and be a bit more specific about what you want to happen vs. what is happening we'll be happy to have a look at it.

[the_bear_58 0]

Hi Slashee_the_Cow.

 

Thanks for your reply.

Not sure how to be more specific. I would like to know why this problem occurs and how to get rid of it.

 

Edited May 12 by the_bear_58

[Slashee_the_Cow 480]

This isn't a problem; it's working as intended. Your cutout is 1 layer deep and you have Top/Bottom > Bottom Layers set to 4, so every part of your print will have four layers below it.

For everything except the cutout, it's layers 1-4. But since the cutout is on the first layer and there's no material, the four bottom layers above it are going be 2-5. It's using the same type of fill as the layers below it. It's there to make sure all parts of the print are equally strong.

It's not going to be noticeable at all from the outside because there's still 3 layers which are completely skin between it and the outside, and it's going to make the inside stronger.

[the_bear_58 0]

Thanks so much.

Now I understand better.

[gr5 2,265]

If there was no skin, you'd be able to see into the inside of the part.  You'd be able to see the "diamond pattern" infill through the holes where the logo is.

[Slashee_the_Cow 480]

1 hour ago, gr5 said:

If there was no skin, you'd be able to see into the inside of the part.  You'd be able to see the "diamond pattern" infill through the holes where the logo is.

There's still three solid layers of skin between the design and the outside, I think they were just confused about the appearance of just the design as skin on layer 5 which was otherwise infill.