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STL as Mask (think photoshop masks) before print preview

Posted: Fri Apr 07, 2017 9:21 am
by Amittt
Hi S3D world!

It would be a unique and time saving feature to be able to use STL's as masks (think photoshop masks). Sort of like how if you place your model half on the virtual build plate and half off of the build plate, when you preview to print, only the half thats on the build plate will be sliced and printed.

I would like to be able to use STLs as masks. For example, look at the screenshot of a lithopane of me (handsome right? Aw thanks you're so nice)

The hexagon STL would serve as my STL mask and and the model right is what would actually slice to print. This would be obviously cool for lithopones and stuff but I can't even imagine all the other super creative uses this feature may have.

Thanks for checking out my feature request! Let's make this happen!!

Long live S3D,

Amit Fernandes

Re: STL as Mask (think photoshop masks) before print preview

Posted: Sat Apr 08, 2017 8:32 am
by brian442
That's an interesting idea! I guess right now you could use S3D image to 3D add-in and then export the STL file it creates and cut it up in a CAD program to get the shape you want. But this would definitely be easier.

Re: STL as Mask (think photoshop masks) before print preview

Posted: Sat Apr 08, 2017 10:58 am
by upsm
It would be cool the have "mesh filters", like in Slic3r modifier mesh-es, to define processes. Then you can print only that process for e.g.

Re: STL as Mask (think photoshop masks) before print preview

Posted: Thu Nov 01, 2018 11:46 pm
by Jkush
Wanted to chime in with a variation of the same request. Here's a link to the other thread I posted on using separate meshes for slicer boolean operations.

viewtopic.php?f=23&t=11578

This is something Cura has implemented and it's a fantastic option. You have the ability to assign specific profiles / or profile properties to a separate mesh so it can influence specific operations in the slicer. My biggest issue was wanting to add a hollow space inside infill on large parts.

Pics from other thread added here -

S3D test mock up
S3D infill hollow.jpg
Cura slice using boolean insert mesh to create inner space with 0% infill
Cura_hollow infill.jpg
End goal is to have a slow printing outer wall, three fast printing inner walls, a 1" deep layer of infill with a single fast printing inner cavity wall, 1 bottom and 1 top layer for the inner cavity wall.

The main outer shell object has a profile with 10% infill, one slow outer wall, three fast inner walls and 6 top and bottom layers.
The insert mesh (inner cavity object) has a 0% infill setting with a single fast printing wall, 1 top and 1 bottom layer.

Hope this all makes sense !

Re: STL as Mask (think photoshop masks) before print preview

Posted: Thu Jan 10, 2019 9:35 am
by wfcook
The feature described by jkush would be extremely handy. I have a very large print (70+ hours print time) that I wanted to make faster and lighter by removing the material on the inside. But since I have a fairly high number of outer perimeters (5), the effect was just the opposite.