The present invention provides a hot knife, which includes a blade, a heat source, a handle, and a power source. The blade includes a central portion extending along a central axis, two wing portions integrally extending outwardly from two opposite sides of the central portion in a radial direction of the central axis, and a chamber defined by inner walls of the central portion and two wing portions. The heat source is disposed in the chamber and is adapted to supply heat to the blade. The handle is attached to the blade. The power source is disposed in the handle and is electrically connected to the heat source.

The present invention provides a hot knife, which includes a blade, a heat source, a handle, and a power source. The blade includes a central portion extending along a central axis, two wing portions integrally extending outwardly from two opposite sides of the central portion in a radial direction of the central axis, and a chamber defined by inner walls of the central portion and two wing portions. The heat source is disposed in the chamber and is adapted to supply heat to the blade. The handle is attached to the blade. The power source is disposed in the handle and is electrically connected to the heat source.

Device for cutting double curvature surfaces into expanded polystyrene foam volumes comprising a first pair of linear guides; over each of the linear guides two pairs of plates arranged over skids are moving, where a horizontal beam connects each pair of plates; the two pairs of plates and the pair of horizontal beams; a block of material supported on the plates is displaced by a first pair by of step motors simultaneously activated; where the block of material in its movement faces a rectangular frame which is arranged perpendicularly to the movement path of the block, with the rectangular frame having a fixed position and a flexible foil, which is covered with a sheath of thermal and electrical insulation, over which a resistive heating wire is helically wound where electrical current heats the wire and vaporizes the zone previous to physical contact with the block of material during displacement.

Device for cutting double curvature surfaces into expanded polystyrene foam volumes comprising a first pair of linear guides; over each of the linear guides two pairs of plates arranged over skids are moving, where a horizontal beam connects each pair of plates; the two pairs of plates and the pair of horizontal beams; a block of material supported on the plates is displaced by a first pair by of step motors simultaneously activated; where the block of material in its movement faces a rectangular frame which is arranged perpendicularly to the movement path of the block, with the rectangular frame having a fixed position and a flexible foil, which is covered with a sheath of thermal and electrical insulation, over which a resistive heating wire is helically wound where electrical current heats the wire and vaporizes the zone previous to physical contact with the block of material during displacement.

An information processing method for generating slice data in a shaping apparatus configured to manufacture a three-dimensional object including a shaping object by sequentially stacking shaping materials based on the slice data generated for each layer, the information processing method including the steps of: acquiring cross-sectional data; judging the presence/absence of a support required region; determining a type of the support to be disposed in the support required region; and generating, as the slice data of a target layer, image data including a structure region indicating the cross-section of the shaping object in the target layer and a support region indicating the cross-section of the support.

A surfboard includes a core covered with a laminate and having curved perforations in the deck area and the tail area of the surfboard, in order to prevent air blisters from forming between the core and laminate. The curved perforations are deformable under pressure to minimize the opening of the perforations to inhibit liquid from entering and maximizing under zero pressure to allow the maximum amount of trapped liquid and gasses from escaping. The core is formed from an extruded closed-cell polystyrene foam block that has been shaped by restraining it against a shaped form using shaped restraining tools and straps, and heating it; and by cutting using a hot wire. The core is laminated with FIBERGLAS and epoxy resin, and the perforations are formed using a perforating tool that has a planar or curved working surface and one or more heated needles extending perpendicularly from the working surface.

A surfboard includes a core covered with a laminate and having curved perforations in the deck area and the tail area of the surfboard, in order to prevent air blisters from forming between the core and laminate. The curved perforations are deformable under pressure to minimize the opening of the perforations to inhibit liquid from entering and maximizing under zero pressure to allow the maximum amount of trapped liquid and gasses from escaping. The core is formed from an extruded closed-cell polystyrene foam block that has been shaped by restraining it against a shaped form using shaped restraining tools and straps, and heating it; and by cutting using a hot wire. The core is laminated with FIBERGLAS and epoxy resin, and the perforations are formed using a perforating tool that has a planar or curved working surface and one or more heated needles extending perpendicularly from the working surface.

A heat chamfering apparatus. A support unit supports a glass panel. A heat chamfering unit heat-chamfers an edge of the glass panel by applying thermal shock thereto. The support unit includes a contact support portion supporting the glass panel while in contact with the glass panel and a base portion configured to support the contact support portion. The contact support portion is formed from a first material. The base portion is formed from a second material. The first material has a smaller change in temperature due to lower thermal conductivity and a smaller change in size at high temperature due to a smaller coefficient of thermal expansion while being more ductile due to lower hardness, compared to the second material. In a heat chamfering method, a glass panel is located on a support unit, and an edge of the glass panel is heat-chamfered by applying thermal shock thereto.

A heat chamfering apparatus includes a heated body configured to peel an edge of a glass panel by applying thermal shock to the glass panel while being in contact with the edge of the glass panel and a heater heating the heated body. The heated body includes a heated region and a contact region in a longitudinal direction thereof, the heated region being heated by the heater, and the contact region being configured to be in contact with the glass panel. The cross-sectional area of the contact region is smaller than the cross-sectional area of the contact region. A heat chamfering method includes peeling an edge of a glass panel by applying thermal shock to the edge of the glass panel by moving a heated body heated by a heater relatively with respect to the glass panel along and in contact with the edge of the glass panel.

To provide a portal-shaped tear processing device which is capable of stably performing high precision tear processing.

Provided is a portal-shaped tear processing device including: a portal-shaped frame; a rail member; a controlled movement robot; and a tear processing means, in which the column member and the beam member have an outer shell portion, a filling member enclosed in the outer shell portion, and a hollow portion boring the filling portion along a major axis direction of the column member and the beam member.