An optical substrate according to one embodiment includes a support substrate, and a projection-depression structure layer on a surface of which shapes of projections and depressions are formed, the projection-depression structure layer being laminated on the support substrate. The extending directions of projection portions contained in the projection-depression structure layer are irregularly distributed seen in planar view. An outline seen in planar view of a projection portion contained in a region per unit area of the projection-depression structure layer includes more straight line sections than curved line sections.

Methods and systems for creating a mold for a cast memorialization product are described herein. In a process for creating a mold, a three-dimensional (3D) model of a product design is generated. The product design includes customized features for a memorialization product. A mold design is generated based upon the 3D model of the product design. Printing instructions for creating the mold are generated and accessed by a processing device. The mold is created according to the printing instructions. A product, such as a bronze memorialization product, can be cast using the mold.

An injection mold of a plastic preform includes first, second and third parts, the third part having a molding cavity defining an axis and adapted to be fixed to a first surface of a mold frame; the second part between the first and third parts slides along the axis to close or open the cavity. The first part includes a rod that slides along the axis through a second surface of the frame. The second part includes: a guiding cage through which the longitudinal rod can slide; a structure; and parallel guiding rods extending to the structure; an assembly sliding inside the cage; and a punch sliding inside the structure and defining a first complementary component of the cavity;
wherein the structure defines, together with the punch, a cam system for opening or closing two half-collars which define, when closed, a second complementary component of the cavity.

A number of variations may include a product that may include a substrate that may include an aluminum-nickel alloy and at least one surface and a coating that may include a metallic material deposited over the at least one surface via laser cladding.

The present disclosure provides a method of investment casting using additive manufacturing. In one aspect, the method includes: creating a digital model of a building component using one or more software tools executed on a computer device and importing the digital model in an additive manufacturing apparatus; producing a first physical specimen by controlling the additive manufacturing apparatus in accordance with the digital model; creating a first negative mold using the first physical specimen as a template, the first negative mold having a hollow space substantially defined by a surface profile of the first physical specimen; producing a second physical specimen using the first negative mold; creating a second negative mold enclosing the second physical specimen therein; producing a casting piece using the second negative mold; and finishing the casting piece to produce the building component.

A method for producing three-dimensional molded parts by means of layering, the moisture content of the build material mixture being able to be regulated.

An additive manufacturing method includes removing material from a sheet to create a plurality of individual layer segments formed, placing at least two first layer segments adjacent to each other at the same height to form a first layer having a hollow interior, the at least two first layer segments defining a first portion of an exterior of a part, and placing at least one second layer segment above the at least two first layer segments to form a second layer having a hollow interior, the at least one second layer segment defining a second portion of the exterior of the part. The method includes attaching the first layer to the second layer and removing material from the first layer and from the second layer to form the part having a continuous surface that extends along the first layer and the second layer.

This disclosure concerns a master model for the production of a mold, comprising: (a) a first part, a second part comprising a textured surface; wherein the first part and the second part are connected.

Methods for fabricating composite tools and composite tools are provided. In an exemplary embodiment, a method for fabricating a composite tool includes providing a master mold and forming a low temperature cured resin laminate overlying the master mold. The low temperature cured resin laminate is heated and compressed to form a cured low temperature cured resin laminate, the low temperature cured resin laminate heated to a first temperature. The cured low temperature cured resin laminate is removed from the master mold and a high temperature cured resin laminate is formed overlying the cured low temperature cured resin laminate. The high temperature cured resin laminate is heated and compressed to form a cured high temperature cured resin laminate. The high temperature cured resin laminate is heated to a second temperature, wherein the second temperature is higher than the first temperature.

A method for manufacturing an imprint mold which can prevent accumulation of the transferring resin onto the transferring roll is provided. A method for manufacturing an imprint mold, including: a resin coating step to coat a photo-curing resin composition or a thermosetting resin composition onto a pattern transferring mold having a fine concave-convex pattern; and a transferring step to transfer the resin composition throughout the entire circumference of a cylindrical transferring roll and cure the resin composition so that a reverse pattern of the concave-convex pattern is formed throughout the entire circumference of the cylindrical transferring roll, is provided.