Abstract: A composite lumber comprising a curable polymer and renewable natural materials, from a plant-based and/or tree-based source, as well as a method for manufacturing the same. In a preferred embodiment, the composite lumber is cast to a specific size and shape, for example as commonly utilized in commercial or home building industries. The composite lumber includes different sizes of natural materials which impart desirable properties thereto. In one embodiment, the method of the invention incorporates the different-sized natural materials in a sequential order based on size, starting from the smallest size.

Abstract: A composite lumber comprising a curable polymer and renewable natural materials, from a plant-based and/or tree-based source, as well as a method for manufacturing the same. In a preferred embodiment, the composite lumber is cast to a specific size and shape, for example as commonly utilized in commercial or home building industries. The composite lumber includes different sizes of natural materials which impart desirable properties thereto. In one embodiment, the method of the invention incorporates the different-sized natural materials in a sequential order based on size, starting from the smallest size.

Abstract: A method of forming abrasive grinding wheels includes the steps of preheating abrasive grains, an open circular mold and liquid epoxy binder, to a temperature below the curing temperature of the binder and at which the binder has relatively low viscosity. The binder is placed in the mold and the mold is rotated, or the mold is held stationary and grains are added from a moving delivery source. The abrasive is added along a radian with respect to an axis of the mold. The rate of the addition of the abrasive grains and the rotational speed of the mold or delivery source are controlled such that abrasive grains added during a prior rotation submerge in the binder by the time the mold or delivery source again reaches the area where more grains are added. After the binder is suitably filled with abrasive, the wheel is cured by heating and the solid mass removed from the mold and trimmed to size, removing any skin of excess binder.