AOkay I know this is not advisable, but a client has requested this and I want to find out if anyone has tried it or knows a way around it. The cake requested is a four tier stacked with bottom sponge and middle two fruit and top sponge! They will be 10,8, 6 and 4 in respectively. I've not tried this before I've always recommended fruit for bottom cakes of a stacked cake. Is there a way around this or am I right in not recommending for the fact that fruit is heavier?

I frequently stack fruit on top of sponge.

As long as you dowel properly, there's no problem whatsoever.  The dowels take the weight of the cake, not the cake itself.

Suzanne x

AThank you Suzanne, do you use the plastic or wooden dowels or the thicker kind of dowels? I saw something about locking plate pillars, have you ever tried this method?

I used to use wooden, but my local supplier changed make and they were warped!  So now I use plastic.  I don't use the wide, hollow Wilton ones.  Just ordinary thin plastic ones.  As long as they go in vertically, they're fine!