If you are planning on building your own little personal slot machine gaming area at home or you want to add a particular slot machine to a collection you already have, one of the things you need to do is to find out which one of the many slot machine manufacturers made the slot machine you want and try to find them either in the yellow pages or online. You can find a lot of these makers of slot machines online and most of them offer people a list of almost all of the machines that they are known to have made. If the machine you are looking for is one that is old and has been decommissioned for a long while, you may or may not find one available for sale from these manufacturers. You may need to find the machine you are looking for elsewhere like with collectors like yourself or with sellers of used machines from many different manufacturers.