What he ^ said...my old Maytag had a concrete weight in it.  I'm currently planning on returning that old Maytag back to a portable but I no longer have the cabinet it came in so that IKEA one might work for me too.  I think IKEA used to sell a specific DW cabinet a few years ago IIRC but no more.  Martin, do you know how much those counterweights weigh?

I have a number of BI dishwashers that I have made carts for.  I just extend the front of the cart a few inches and bolt the machine to the cart.  I can have both racks fully loaded and pulled out with no tipping.  This is the first one I built but I've learned I really only need to extend a couple of inches so subsequent ones didn't stick out this far. Where I would like suggestions is what to do about the sides. I have collected a few of the kitchen aid butcher block tops over the years and so far they have all fit model to model. I don't show it in this picture. I'm just not sure what to do about the sides. I'm not sure about that cabinet from Ikea unless the open end goes on the bottom. I'll be eager to see how that works out.

I may try something like that.  All my converted machines are stored right now but I thought about something like some bead board.  You're idea may be more sturdy but I may need to increase the size of the cart just a little.  If I take the time to do that I will also reduce the amount in the front of the cart.  I don't think it needs to stick out quite that far to avoid the tipping.  The one I have in the house right now it a full fledged portable.