Splitting stl files into multiple pieces to 3D print in multi color

[Anonymous]

So recently, I gained access to a prusa 3d printer with a multi color addon, allowing for like 6-7 different colors to be used in a single print

Issue is, making files that can utilize this

I looked online and meshmixer seemed like the best bet, so I download it, run it, and import, say, a train I made in fusion360

I try and follow the work flow of those I see online, and do the selection, boundary thing, and create face group several times for different parts

Issues start when I do generate complex

When I do that, the boundary line things dont appear, wont be selected, or just dont exsist and I dont know why, but it prevents it from seperating the sections I want it to, and overall has just been a mess(yesterday I spent around 4 hours trying to seperate a L from a coin thingy, the line surrounding it was red, and I couldnt figure out why)

If anyone can help, or reccomend a program more built for what I need, please let me know, as this is getting very frustrating

also if I do accept the generate complex(the offset thing is annoying though, as the first few times it like half split the stuff I wanted it to, but left a random jumble of faces behind, which should have been part of the split piece), and then I split complex, 

Thanks!

[Anonymous]

I'm pretty sure that MM is the best you can get for free to manage your task.

Using its Complex tool to extract parts to be printed on a multi color printer can't be done in one go.

To define multiple color you need to start running Complex and SplitComplex defining what to print in a certain, single color (let's say white) and what to print in different colors - that's the non white object.

Now split the complex to a "white" and "non white object".

Take the "non white object" and split off (let's say red regions) to end up with a red and "non white and non red" object.

Take the "non white  and non red object" and split off (let's say blue regions) to end up with a blue and a "non white and non red and non blue" object.

Take the "non white  and non red and non blue object" and split off (let's say green regions) to end up with a green and a "non white and non red and non blue and non green" object.

... (got it?)

There may be issues due to the base mesh's triangle structure.

Can you post the file (zipped) here or send me a private download link to look into it?