I have a tall stairwell leading up to my attic 'den' and I was thinking about building a table top onto the railings to create a space for some turntables, mixer and laptop. Initially I thought I'd build it from wood, but experiments have made me see that even covering about a third of the stairwell makes it horribly dark. So I thought I could make a table top out of some transparent, heavy duty acrylic or polycarbonate that could be drilled and bolted onto the stair rails and take the weight of the kit (around 25-30kg).
Can anyone recommend a suitable material for loadbearing applications such as this? And any observations about thickness required, solving any sag issues, mounting techniques and so on would be very gratefully received.
Here's a crude schematic:
Dimensions would be approx 135cm x 750 cm.