Aside from the disappointment of not being able to use any type of paint (forget the Glycero for example) clearly stated in the manual, reading the latter does not reveal too much tedious and makes it easy to assemble the device. The less used will possibly some time to become familiar with the different options: depending on the material where you painted, two nozzles are provided and the unit can be set according to (trim / other material, facade walls, ...), ditto for how you want to apply the paint (vertical / horizontal / on a specific area and small) for which a button changes the distribution of painting ... All of options and opportunities to test in advance to be certain of the desired rendering.
For the first use, even having followed all the instructions (caution nonetheless on the board of the User Guide on the percentages of dissolution of the paint, the best is to seek advice in specialized stores once your paint chosen IMHO ), the result is quite disappointing for lack of user experimentation (aka: me!). I found myself with a speckled small droplets of furniture and in places quite unsightly paint clusters (that I was forced to mop roller anyway!). Very painful, especially given the expectations placed on this unit.
But after a few uses through trial (and a little paint ruined ... go!), I attacked the printing layer for my shutters. And there, the result was stunning, both in terms of time savings in terms of result. The paint is completely unattainable interfered in the interstices brush and rendering was spotless.
Also, all subsequent uses were in the same direction. The only "trick" a bit tedious cleaning concerns need to perform very carefully, at the risk of some side effects if you go with black paint a pink paint. It is a bit long because some parts are difficult to clean, but it will not be enough the happy user of lempêcher refills his pistol next time. With a clear preference for rather broad surfaces and protections than the height (although from what I was told pistols, I found that the "pests" projections were small). For small parts (cabinet type), the brush remains appropriate. But what a beautiful multi-use the final product, and with a very good ... made after several uses so!