This picture of interstage relationship as it existed in 1937 may be somewhat modified by new developments in molding presses. There are now available self-contained presses which are not dependent upon other units for their supplies of heat and pressure and which are either semiautomatic or automatic. The semiautomatic press requires an operator for charging the cavity and removing the molded product, but once adjusted automatically applies the heat and pressure and controls the time of the pressing cycle. The automatic press, adapted as yet only to the simpler moldings, requires no attention whatever. These presses are more expensive, but may be set up anywhere and require less skilled labor. There is the possibility that they may be installed by some industrial users of molded articles, and thus take some business from the custom molder. If this occurs, such molders will presumably buy their resin from companies that are primarily resin makers, since their requirements of the material would not ordinarily be large enough to justify making their own. _Tar-acid resins for laminating._—The manufacture of laminated resin products is most economic when done on a large scale, in which case the impregnation of the paper or fabric becomes a continuous process, the material feeding from a roll through resin sirup and then through drying towers, where time and heat may be controlled. The impregnated material contains resin in the B-stage. The material is then cut up and the sheets piled together (the number depending on the thickness desired) and sent to huge presses which, with heat and pressure, compact and unite the layers and convert the resin to the C-stage. If it is desired to produce decorative panels with a smooth surface, the top sheet used is one colored or printed with a design (perhaps a photographic reproduction of the surface of a cabinet wood) and placed between polished chromium-plated metal sheets before going to the press. Rods and coil forms as well as flat sheets are commonly made from laminated material. Any of these forms may undergo subsequent fabrication; rods and coil forms cut to required length, thin sheets stamped to shape, gear blanks cut to final form on automatic gear machines, and decorative panels sawed to shape. Many laminators purchase all their resin requirements, but a number of them make part or all of the tar-acid resin they use. In 1937 there were seven laminators who made tar-acid resins (including the second, third, and fourth largest producers of such resins) and four producers of tar-acid resins for this use (including the largest) which did no laminating.