Hello, I am trying to Break apart and rebuild a Mesh, I currently have all the Miscellaneous pieces broken into individual Geo Nodes. I would now like to subtract those Geo nodes by the Principal Mesh.

Ive tried pasting the Group information into a series of delete nodes but when I use more than one delete node (there are several small pieces) the wrong geometry is deleted.

Please advise how I can successfully separate this mesh, Ive included some stills to explain my problem further. Thanks for everyone's help, I'm enjoying Houdini but the learning curve is quite steep!

Hi Brad
If you chain your blast nodes, and you copy your group info (primitive numbers) from the base mesh, your initial group info will not be found in the chain because the geo is not there any more or just partially there.

Try this:
Select a group on your base mesh and use the Extract tool on the Modify tab. This will make a new geo node with an Object Merge node inside that only shows the group you selected.

Hope this helps

-b

Thanks bonsak- but I would like to subtract all the newly created pieces by the Principal Mesh, so that all the remaining Polygons match 1:1 with the pieces I removed. I have tried copy-pasting Polygon info from the Extract-created Geo nodes into delete nodes which are wired into the Main Mesh- and that is not reducing the mesh down to just the parts I did not break off using the Extract Node.

Nevermind- realized my mistake. I was trying to use multiple delete nodes, instead I am just copy-pasting all the data into one delete node, that's getting it done.

Thanks bonsak!