Filling a hollow space

I downloaded a base from MMF. The creator made the bottom hollow for resin printing. I want to print with FDM and need to fill the hollow space with a honeycomb. Is that easily accomplished with Nomad, and if so, how?

Make a honeycomb.
Place it in the base where you want it.
Select the base and honeycomb.
Vowel remesh.



Thank you very much. I had some kind of brain block, but I knew there was a simple solution. This forum is great.