Knife tool "can't cut between different faces"... what does this mean?

[glad elm]

I don't know how this tool works, can't find anything on it. I'm trying to cut 2 intersecting plane-like meshes.

[winged verge]

Welcome to the help forum!

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[polar spruce]

knife tool cut on a face.
what you are looking for is boolean operation which there's no way to do in bb atm

[glad elm]

You think I could export it, do the Boolean operation in blender, then import it to blockbench and it would work?

[polar spruce]

worth a try