There is absolutely no thinning necessary in advance of employing this sprayer. The lean-N-Spray pendulum suction tube will present you with an entire range of motion. You may spray up, down or sideways and never shed key. This is a good characteristic when spraying cabinets. Seems terrific! I have already http://erickirjvn.blogproducer.com/1980836/examine-this-report-on-paint-melamine-cabinets