Seano
When the rack is stacked with gear it's fairly solid.
More weight can be added of course.
My floor is very uneven, if I move the rack I can relevel the shelves quite easily. It works well.
The wood is very straight-grained knot-free fir, the stuff used for drawing tables for it's stability.
Plywood would be the best material to use of course because of it's stability, and with all that glue, weight.
I would have used plywood if I didn't have the fir lying around.
Cost played a part in my choice.
Helps with the Aksas being heavy too!
cheers
Tony[/i]