slats were cut from acrylic safety glass on a table saw, then primed and
spray painted. The mesh was bought from a small orders metal supplier.
It's 1/4" flattened expanded metal and seems to fit the bill. I cut
it with tin snips and thick gloves, as it's steel ad quite sharp.
Aluminium or plastic may be a better choice here.
I drilled small holes through each slat and bolted them onto
the belt. This was very tedious, but the results are reasonably
good, I think.