Duplo-isch roundtable

i have added a picture of one of my proto types made out of foamboard.

a turning disc for your duplo trains
or roundtable / roundhouse

my 1st try ever
i'm still very new to al this and comments are verry welcome
and if you want to make i deriative i would be pleased

note that these are all sollids (it probably would make more sence to make the parts hollow)
and i would like to ad holes on the bottom so duplo bloks fit underneath.
and some duplo studs on top to connect duplo there