On my tile cutter the arbour size is 22mm, the same as for angle grinders. My table saw is an old Clarke 10" (the really old metal cased version). The motor was already melted when I received it. I retro fitted a 9" grinder to it and I turned a spacer / adapter ring from 22mm to 30mm. I get 80mm depth of cut and it powers through whatever wood I throw at it.
Been going strong for about 6yrs now.
For your dolls house though, you probably only need a small hobby saw. Cheap as chips on ebay. The hobby saw I use occasionally has a 16mm arbour. I removed the TCT blade and fitted the finest blade I had. Cuts very clean and fine.
A scroll saw might also come in very handy for your project.
HTH
Roy