Trying to do multicolor from a design I made in Fusion 360

I have it almost sorted. BUT one thing is teasing me.
I’ve exported it as .3mf, and inserted it into Bambulab Studio on my PC.
So far it looks like this:


My problem is that the inner circle should be red (the one marked with red scribbles).
But if I paint that with the bucket, the whole plate get’s red.
If I ‘freehand’ paint it in Studio along the edge of the white (with the circle), and then fill it with the bucket, all the white disappears, and only the red and black is shown.
I know it’s me missing something, please bear with me, I’m very new to multicolor printing :slight_smile:

Separate each color with a minimal height difference; that should work.

Hi @JAV-3D
Do you mean in the Fusion 360? Or is it something I can do in studio?

Here’s the direct link to the Bambu Wiki article covering the new .3MF color reading extension.

Here

In Fusion 360, but it can be also other methods.

Ok, I finally got some time to fiddle with this again, and I think I’m getting closer.
I learned that I should define multiple bodies in Fusion360, and then I can select those in Bambulab and give them different colours.

So far so good, so I made this coaster in Fusion 360:


But I’ve run into a few things I don’t understand.

I’ve then selected the correct colours in Bambulab, and in the ‘Prepare’ view it looks like this:


But in the preview, after slicing, it looks like this:

Layer 19 is above the colours, and all black.
I have of course aligned the two surfaces in Fusion 360, but if I lift the logo with 0.02 mm, it seems to be working, I haven’t tried printing it yet (printer is busy).

When I do this, I export it to 3mf, and when I import it, bambu slicer says the object is very small, do you want to rescale to mm, which is really weird, as I work in mm in Fusion 360.
If I say no, it shows up in the slicer in correct scale. It then asks if it’s multiple objects, or one object with multiple bodies, and I select that it’s one object.

So is this me doing something wrong, or is it just the way to fix this when designing 3D prints?