Honeycomb core solid

Hi, so I'm somewhat new to SWX and it seems I've been tasked with making solid models of honeycomb core parts that should exist within our company's current part models.

I've got a boatload of aircraft carbon fiber parts with a void in the solid that should be a modeled piece of core. But this would add too much work for our other engineers to handle.

I'm looking for a faster way to make that solid and flatten it to a plane so it can then be cut on the cnc.

SolidworksParts And Features