Acquire operator's manuals, if you intend to repair appliances. It is possible to also paint any appliance, although I wouldn't use it on small appliances that are made from plastic. Appliances are among the more important expenses for a homeowner. When an appliance doesn't operate in how the manual states it will, it has to be repaired, replaced or refunded. Some appliances, including vacuums do not have to be new, they simply have to get the business done.