For floppy materials we use a few approaches: first, instead of putting the material on the standard "metal slat" bed, we use a product called Rhino Board, whic

For floppy materials we use a few approaches: first, instead of putting the material on the standard "metal slat" bed, we use a product called Rhino Board, which is essentially a whole bunch of plastic straws glued together into a rigid mat. It provides more granular support. For materials still needing more support, we put a sacrificial board (either OSB or plastic sheeting) underneath. And for materials that we can't glue down, or are even more problematic, we also put a sacrificial sheet on top.