The improved mold assembly for cultured marble molding is provided. The mold assembly can comprise a male mold portion and a female mold portion. The assembly can further comprise a molding tool. The molding tool can have a side wall having an upper curved s and a lower curved portion. The molding tool can be constructed from a flexible and/or soft material. The lower curved portion of the molding tool can be coated with a gel coat having a first color. The molding tool can facilitate molding of a countertop having a recessed bowl portion having a color different from a counter portion of the countertop.

A method of hose construction comprises: providing a sacrificial layer on the surface of a hose former; constructing a hose on the sacrificial layer; forcing pressurized fluid between the sacrificial layer and the hose former to separate the hose former from the sacrificial layer; and separating the sacrificial layer from the hose.

A method of vacuum forming an object includes heating a plastic sheet. After heating the plastic sheet, a vacuum is applied to pull the sheet against an outer surface of a flexible mold so that the plastic sheet has a formed shape that conforms to a contoured shape of the outer surface of the flexible mold. A rigid core is withdrawn from a cavity in the flexible mold. The flexible mold is then withdrawn from the plastic sheet by applying force to the flexible mold in a single direction, thereby causing flexing of the flexible mold past the undercut. An apparatus for vacuum forming a plastic sheet includes the flexible mold.

A method of vacuum forming an object includes heating a plastic sheet. After heating the plastic sheet, a vacuum is applied to pull the sheet against an outer surface of a flexible mold so that the plastic sheet has a formed shape that conforms to a contoured shape of the outer surface of the flexible mold. A rigid core is withdrawn from a cavity in the flexible mold. The flexible mold is then withdrawn from the plastic sheet by applying force to the flexible mold in a single direction, thereby causing flexing of the flexible mold past the undercut. An apparatus for vacuum forming a plastic sheet includes the flexible mold.

A processing target mold is usable to form, by molding, a processing target to be shaved by a shaving device. The processing target includes a hold portion held by the shaving device, a target portion to be formed into a post-shaving item, and a coupling portion coupling the hold portion with the target portion. A main body of the processing target mold includes a bottom member, an outer frame member extending upward from the bottom member, and a protruding member extending upward from a portion of the bottom member that is enclosed by the outer frame member as seen in a plan view. The main body includes an injection space enclosed by the bottom member and the outer frame member. A material is injected into the injection space. The injection space includes a hold space, a target space and a coupling space in which the hold portion, the target portion and the coupling portion are respectively formed by molding.

A support mandrel for producing curved composite components includes a prismatoid mandrel body formed from a flexible material, the mandrel body having two polygonal bases and an upper support surface extending between the two polygonal bases of the mandrel body, and a reinforcement bar enclosed within the mandrel body and extending between the two polygonal bases of the mandrel body substantially parallel and near to the upper support surface of the mandrel body.

A support mandrel for producing curved composite components includes a prismatoid mandrel body formed from a flexible material, the mandrel body having two polygonal bases and an upper support surface extending between the two polygonal bases of the mandrel body, and a reinforcement bar enclosed within the mandrel body and extending between the two polygonal bases of the mandrel body substantially parallel and near to the upper support surface of the mandrel body.

A device and a process for manufacturing a composite part, the device comprising four molding mandrels that can be arranged in a mold arrangement in which they form a mold for the composite part, as well as a locking mandrel configured to lock the molding mandrels in the mold arrangement and to be extracted from between the molding mandrels to release the molding mandrels from their mold arrangement. The locking mandrel extends from one longitudinal end of the molding mandrels to another opposite longitudinal end of the molding mandrels.

The improved mold assembly for cultured marble molding is provided. The mold assembly can comprise a male mold portion and a female mold portion. The assembly can further comprise a molding tool. The molding tool can have a side wall having an upper curved portion and a lower curved portion. The molding tool can have a bowl portion and an apron portion spaced from the bowl portion by a gap. The molding tool can be constructed from a flexible and/or soft material. The molding tool can facilitate molding of a countertop having at least one seamless curved edge and/or an at least partially seamless sink portion.

The improved mold assembly for cultured marble molding is provided. The mold assembly can comprise a male mold portion and a female mold portion. The assembly can further comprise a molding tool. The molding tool can have a side wall having an upper curved portion and a lower curved portion. The molding tool can have a bowl portion and an apron portion spaced from the bowl portion by a gap. The molding tool can be constructed from a flexible and/or soft material. The molding tool can facilitate molding of a countertop having at least one seamless curved edge and/or an at least partially seamless sink portion.