I finally got around to using some EM 6000 last week for the first time. I've had a gallon for over a year, but being the thrifty guy that I am waited until I used up all the USL I had on hand first. I've read a lot of reviews on EM 6000 and many of them had mentioned experiencing problems wet sanding. I've done around 25 guitars with Target's USL lacquer and have always wet sanded w/distilled water without incident. I know there are those who prefer not to wet sand, but I get better results using this technique, so I was a bit concerned.
I followed my normal schedule of zpoxy pore fill (this was a neck only) and sprayed and levelled as usual. I wet sanded as usual to level, but I used a "Green" product from Crown called "Next". It's basically an odorless mineral spirit with less harmful ingredients than regular mineral spirits. I'll let each individual judge for themselves how "Green" it is, but I will say that worked very well for this purpose. Better than water and easier to clean as the "Next" slurry comes off much easier than the distilled water slurry does. Here's a link to some consumer product info. for those who are interested.
http://whatsinproducts.com/information. ... 16-025-019The EM 6000 does appear to flow out better than the USL (I use both products at full strength) and my sanding time was significantly reduced. It buffed out very nicely and appears to be a little harder than the USL. For those who prefer a waterbourne finish, it's a really great product.