Rapid Prototyping involved creating a working model of various parts of the system at a very early stage, after a relatively short investigation. The method used in building it is usually quite informal, the most important factor being the speed with which the model is provided.
There are water-and solvent-based -- also called oil-based -- polyurethane varnishes. Water-based polyurethanes are more environmentally friendly and safer to use than solvent-based, but they are not as resistant to wear and tear as solvent-based products.
The Klean Strip Green products are formulated for effective performance as well as having a reduced impact on the world in which we live. Klean-Strip 1 gal. Green Odorless Mineral Spirits is a unique, patent-pending formula that thins oil-based paint, stain and varnish.It will also clean brushes, paint splatters and equipment. The formula is milky-white formula but is safe for use in all colors of coatings.ated 1.0 out of 5.0 by mikeorama Horrible product -- N OT MINERAL SPIRITS! This is NOT mineral spirits; it is mineral spirits SUBSTITUTE and a very poor substitute it is. It's thick and milky white. Works okay for cleaning oil paint and varnish off your hands, but useless for thinning purposes.