I got one when they were on sale at Menards in August. They claim you can shoot any paint without thinning. I shot a few paints through it...no dice. I then thinned with floetrol....no dice. It is quiet I will give it that. In the end I took it back and went back to a good old suction feed gun and compressor. For stain I have a feeling it will suck just as bad. Maybe I have higher standards as I have done a lot of airbrushing and painting of metal etc. It seemed to just heave the paint on to the surface in an orange peel fashion.
I didn't use Flexio but I was using Wagner 518080 Control Spray Max HVLP with acceptable success (if you aware about overspray issues). And you need to tint latex paint otherwise it sprays unevenly (orange peels). I used with latex paint and watebased poly. I wouldn't try to use it with oil based things. Likely you will not be able to clean the gun. Also you need to learn how to use it It's not so obvious how to choose air-flow and how it affects paint volume.
Bottom line I will leave it for outside work and buy something better for woodworking.
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