What he said!
Honeycomb is good at providing a surface for small items to sit on, cf knife type beds, nail type beds but it does have its problems. All the marks you see on honeycomb beds are not burns but where through cut residue has stuck to it. You need to keep it free of any small pieces of material that get stuck inside it instead of falling through, they can reduce the airflow taking fumes/smoke away from the underside of the cut and allow more residue build up on the honeycomb and on the underside of the material. Get enough material in a honeycomb cell and it increases the chance of a small fire. I run a vacuum cleaner over mine weekly.