other material and so on wherein selection of which such supply is allowed to exit such vessels could be made and wherein each such vessel may contain said particulates of a specific size range wherein each same such vessel may contain mixtures of any or all such mentioned particulates and or such mentioned other materials and wherein mixing of any or all such particulates and or materials may take place in the space that is between the said exit point s of said vessels and the said general point s of impact at said substrate surfaces and wherein same such mixing may take place at or near the same such general point s of impact at same said substrate surfaces obviously such apparatus as the foregoing could have numerous variations that would remain in the general scope of the methods of the present invention among such would include 3a generally the foregoing but with the added utilization of air or gas pressure as an alternate to gravity for generating needed velocity to said particulates and said other materials and wherein direction of flow of same said particulates and materials could be varied from vertical planes to horizontal planes and wherein length of said linear distance could be shortened objects of all such variants generally would be to supply said particulates and said other materials to surfaces of said substrates wherein such apparatus is a supply of said particulates and materials a supply of velocity or such force of motion to same particulates and materials and wherein such apparatus does not.