BCT recently invested in a PolyTool made by German builder 2KM.

The machine is used for metering, mixing, and applying highly viscous tooling paste. Output is constant and the PolyTool has an externally valved chop check that pumps by an electric motor dispensing each stroke giving a smooth flow of the dense material, eliminating air pockets. This dense material serves as a tooling paste used in the master-making process.

Traditionally when machining solid tooling block masters, they have a tendency to stress relieve while cutting. Additional areas of concern include warping in flange areas or where the material becomes thin.

In order to prevent deformation, BCT over mills foam block, and then applies the tooling paste. When the paste cures, it is milled into the final shape of the master. This process forms a strong shell preventing any movement of the master which creates better molds, enabling better parts.