1 Stone countertops, including granite, other natural stone and quartz resin (engineered stone) cost $4-$150 per square foot, or $120-$4,500 for a typical 30 square foot kitchen countertop. 2  Stone tiles cost $4-$20 per square foot; slab stone countertops cost $50-$150 per square foot.
STL (STereoLithography) is a file format native to the stereolithography CAD software created by 3D Systems. STL has several after-the-fact backronyms such as Standard Triangle Language and Standard Tessellation Language.
What is a DLL file? DLL files, also called Dynamic Link Libraries, contain a collection of executable functions and information that can be used by a variety of Windows programs. A .DLL file cannot run on its own. It is loaded and used by a program executable (EXE file), so you should not try to run them on their own.