Visible flushing from two colours with flushing off

Bambu Lab Software Bambu Studio
1

In the first image I’ve added and joined two primitives after colouring one of them.

flushing into objects
flushing into objects1920×932 104 KB

I’ve removed flushing into anything, including the ‘flushing volumes’ from red to white.
It may be by default, but the problem I have is that you can easily see the red item through the white, which doesn’t look great.
This is an example of two pucks the white slightly higher than the red. I originally imported either an STL or STEP was as a single object, but after colouring, any joining walls bleed into each other. The colour extends to the bottom of the red puck, so they join well on the bed.
Changing the flushing options to 0 from red to white actually made it worse, as I got an extra layer of red in my white puck:
PXL_20231123_052345749~2
PXL_20231123_052345749~21617×1036 274 KB

The only work-around I can think of is to add extra white layers to avoid seeing the red through it.
Any ideas would be gratefully received.
Thanks!

2

Using the paint tool, I always get this mixing too. Good for strength. For thin objects though, it is better to use modifiers.

Right click the part, add modifier (probably cylinder here), size and position the modifier, change filament on the modifier, slice.
That color change respects the boundaries of the modifier.

Hope this helps :slightly_smiling_face:

3

Thanks for that, although I couldn’t get it to work, it did lead me down a series of rabbit holes. I ended up splitting the (original) models in F360, importing the STLs as one, splitting them to objects, assigning a coloured filament to one, then joining them back up.
It did leave the model less than perfect where for some reason where they join it added a layer on top, but I’m sure with a bit more experimentation, I can fix that.