Abstract: The present invention relates to a multiple decorating tip intended for culinary preparations. More particularly, it is a modular device adaptable to a piping bag, a siphon, a pressure plunger or a pastry syringe allowing simultaneous, homogeneous, regular and rapid exit of a culinary preparation through different orifices including the shape can be chosen by the user. The device being made up of the association of at least three elements: a connection tip to the container; a reversible support with two parts, one lower and one upper, the latter attaching to the connection tip; a decorating tip plate with at least two decorating tip, the decorating tip plate being clamped between the upper part support and the lower part support.

Abstract: An interface device, coloring agent and method for imparting color to food material during the decorating of foods. This interface device, coloring agent and method for imparting color to food material during the decorating of foods can be used to impart color from solid, liquid or semi-liquid coloring compounds to a wide variety of food material such as frosting and icing.

Abstract: A dispenser includes a holster having a first ply and a second ply, a reservoir having a first sheet and a second sheet connected at edges thereof, and a dispensing aperture arranged between the first sheet and the second sheet, wherein the second ply forms a pocket on the first ply, and the reservoir is arranged in the pocket between the first ply and the second ply.

Abstract: One or more techniques and/or systems are disclosed for a device that can be used to seal an opening of a package to mitigate loss of package contents, and to effectively transfer contents of the package to a target device or system. The device can comprise a base cap that engages with a package opening, such as a fitment, and a nozzle portion. Alternately, the fitment may comprise a fixedly engaged base. The nozzle portion can comprise a portion that selectably engages with two or more target systems, such as through a filling port, and may also selectably engage with a closing cap that can be used to close the opening, by sealing a spout portion of the nozzle.

Abstract: A tube for use inside a well. The tube includes a longitudinal body having two threaded ends, the body having a bore; a carrier mechanism located on an exterior of the body, wherein the carrier mechanism has a port and a protecting cover separated from each other by a pre-determined distance (D); and a nut configured to be screwed into the protecting cover.

Abstract: The aim of the invention is to be able to arrange or secure an elastic nozzle in a device, especially a casting machine, using simple design measures while allowing the nozzle to be quickly replaced in the device using simple mounting steps. Said aim is achieved by a connection piece (1) which is particularly suitable for securing an elastic nozzle (3) in a casting machine. The connection piece (1) preferably has a hollow cylindrical shape and includes a securing mechanism (4), especially a thread, at one end. A clamping unit (2) is connected to the connection piece (1). The connection piece (1) and/or the clamping unit (2) has/have a receptacle for the nozzle (3), and the nozzle (3) is connected to the connection piece (1).

Abstract: An apparatus for granulating hot cut, in particular thermoplastic resin material, the material strands melted by an extruder being knocked off into granule pellets in a granulating housing by rotating knives disposed on a shaft driven by way of a motor, the granule pellets being picked up by a cooling medium flowing in the granulating housing, cooled and discharged out of the granulating housing, characterized in that a flow opening establishing a continuous fluid connection between the inside of the granulating housing and the outside environment is designed between the shaft and the region of the granulating housing in which the shaft penetrates the granulating housing.

Abstract: A pelletizing device comprising a rotary drivable at least partly cylindrical die, wherein the cylindrical part comprises a multitude of radial openings for making of pellets and at least one roller rotatable around a stationary shaft, for pressing of material to be pelletized through the radial openings in the die, wherein the roller is mounted to the corresponding stationary shaft by means of at least one roller bearing and wherein the pelletizing device comprises an oil circulation system for lubricating each of the roller bearings of each of the rollers with oil.

Abstract: A pair of mold cores (51, 52) for molding an undercut portion (P1) in a holder (30) installed inside a movable mold (13) are connected to and supported by a retaining piece (40) which is moved in the demolding direction, and at the time of demolding, the respective mold cores (51, 52) are guided by guide means (33, 34) from the molding position, where they are contacted with each other, to the mold release position, where they are separated from each other, being moved from one end side to the other end side of the retaining piece (40), in the mutually opposite directions so as to pass each other in the back and forth direction.

Abstract: A liquefier assembly for use in an extrusion-based additive manufacturing system, the liquefier assembly comprising a downstream portion having a first average inner cross-sectional area, and an upstream having a second average inner cross-sectional area that is less than the first inner cross-sectional area, the upstream portion defining a shoulder configured to restrict movement of a melt meniscus of a consumable material.

Abstract: A mold unit is provided for molding an object part to be molded which is arranged on an object. The mold unit includes: a fixed core, having a dividing surface thereon; a molding die which is incorporated in the fixed core to mold the object part to be molded; and an auxiliary die interposed between the molding die and the dividing surface of the fixed core to ensure a positional accuracy of the object part to be molded with respect to the object by modifying the auxiliary die.

Abstract: An extrusion device for making spiral stripping electrical wires is disclosed to include a fixed mold member, which has a main flow path and a supplementary flow path for the passing of a first insulative material and a second insulative material, and a rotating mold member, which is rotatably supported on the front end of the fixed mold, having a mold hole axially connected to the outlet of the main flow path and one or multiple flow paths, each flow path of the rotating mold member having an outlet in communication with the mold hole and a common annular inlet disposed in communication with the outlet of the supplementary flow path for guiding the second plastic material spirally into the first plastic material to form a spiral strip in the insulator during extrusion of the two plastic materials with a conductor through the mold hole.

Abstract: Apparatus and methods for a preform mold system include multiple preform core side modules having preform mold cores, a core side clamp plate connectable to a moving platen of an injection mold machine and operable to receive the preform core modules, multiple preform cavity side modules having preform mold cavities, each of the preform cavity side modules operable to matingly engage a respective core side module to form multiple preform molds having a respective preform design, and multiple ejector housing assemblies for connecting the core side modules to an ejector platen of the mold machine, each of the ejector housing assemblies corresponding to a respective core side module.

Abstract: A method for forming a coating layer is provided according to the invention. The method includes steps of assembling a die coater comprising a first die block (12), a second die block (14), and a plurality of fasteners (40) holding the first die block and the second die block together, wherein each of the plurality of fasteners provides a compression force between the first die block and the second die block, and the first die block and the second die block are constructed to provide an internal manifold (16) and a coating slot (18), and extruding a coating material through the internal manifold and the coating slot. The coating slot can be adjusted to provide a more uniform coating slot along the length of the coating slot by adjusting the compression force of the fasteners, utilizing an offset bracket (80), adjusting the die bolt locations, adjusting the die overhang, providing a non-uniform shim (30), or a combination thereof. A die coater is additionally described.

Abstract: The invention relates to a blow head for producing blown tubular films from thermoplastic materials. Films produced by conventional blow heads often have dull strips or wavy areas, the so-called spiral strips. The aim of the invention is to avoid these negative film properties. For this purpose, the blow head comprises a plurality of annular gap-shaped melt channels arranged concentrically around the center axis of the blow head, the spiral distributor of the inner melt channel being arranged on the inner limiting wall in relation to the center axis of the blow head and the spiral distributor of the outer melt channel being arranged on the outer limiting wall in relation to the center axis of the blow head.

Abstract: A food extruder including a barrel provided at one end with an outlet from which the food substance can be extruded, a rotatable screw positioned within the barrel that is capable of being rotated and moved longitudinally within the barrel, a handle member at a top end of the rotatable screw for manual engagement, and a rod member protruding from an upper portion of the handle member for insertion into a drill chuck. The rod member, in a preferred embodiment, has a hexagonal cross section, which facilitates insertion and securement within a drill chuck, so that the drill may be used to turn the rotatable screw, rather than having to turn it manually. Additionally, a hand grip member may be attached to the barrel member at a generally right angle thereto, so that a user may grip the hand grip while using the drill to turn the rotatable screw, in order to prevent the entire extruder from rotating.

Abstract: A molding system for forming ophthalmic devices includes at least one mold half having a base wherein the at least one mold half is configured to be engaged by an injection molding machine, at least one insert retainer, the at least one insert retainer being configured to receive a plurality of inserts wherein each of the inserts is configured to receive thermoplastic material for forming at least one lens curve wherein the at least one mold half is configured to receive the at least one insert retainer, and means for attaching the at least one insert retainer to the at least one mold half.

Abstract: A hot runner nozzle system (500) comprising a nozzle tip (100) adjacent to a nozzle (405) in series, and a retainer (400) adjoining both the nozzle tip (100) and the nozzle (405) in parallel, the retainer (400) having a first retainer thread (435), for connection to a nozzle thread (420) to form a first seal (450) between the nozzle end (440) of the retainer (400) and a nozzle shoulder (430), a second retainer thread (460), for connection to a tip thread (455) to form a second seal (470) between the inlet end (475) of the nozzle tip (100) and the gate end (425) of the nozzle (405), a seal ring (115) for creating a gate seal (496) with a gate insert (120), and a plurality of flats (410) thereon to facilitate torquing of the retainer (400) to the nozzle (405), the torque value applied to the retainer (400) being about two to four times of that applied to the nozzle tip (100) to facilitate removal of the nozzle tip (100) independent of the retainer (400).

Abstract: Disclosed is a hot-runner nozzle system, including: (i) a nozzle housing being configured to convey a molten molding material, (ii) a sieve being coupled with the nozzle housing, (iii) a nozzle tip being securely coupled relative to the sieve, and (iv) a retainer securely extending from the sieve, the retainer connecting with the nozzle tip.

Abstract: Molding system for use with a mold having stationary mold portion and movable mold portion, molding system comprising: stationary platen configured to support stationary mold portion; movable platen configured to be movable relative to stationary platen, and movable platen configured to support movable mold portion; and extruder, including: barrel defining channel extending through barrel; liner received in channel, liner defining first conically-shaped end; machine nozzle connecting with the mold; and barrel head fixedly connected with barrel, barrel head fixedly connected with machine nozzle so that molten molding material is conveyable from barrel to cavity defined by the mold, barrel head defining passageway extending through barrel head, barrel head defining second conically-shaped end exiting the passageway, second conically-shaped end mated with the first conically-shaped end of the liner so that channel and passageway are aligned with each other.

Abstract: Center filled confections, such as gummy or jelly candies or fruit snacks are continuously produced by co-deposition into a mold without candy tailing to obtain products with substantially uniform side walls and little, if any, shell breakage and filler leakage or bleed-out problems. Decentering of the filler and its accompanying production of thin or weak shell walls is avoided by at least substantially preventing excessive flow of a fluid or liquid shell component along a single side of shell introduction into the manifold nozzle or nozzle cavity. At least substantially uniform flow of the shell component in an annular passageway of a co-deposition nozzle assembly may be achieved with an apertured disk insert, a plurality of manifold bores, or opposing shell component entry points to evenly distribute the shell component and prevent or substantially reduce filler leakage or bleed-out.

Abstract: Apparatus and methodologies are provided for flash drying liquid materials using a variable die. A die and a die body are provided with an adjustably configured pressure regulating variable obstruction in the material flow path that allows control of the pressure applied to the material and consequent control of the temperature of the material as it enters the die. Optimizing pressure and temperature allows optimization of the flash drying process.

Abstract: A coupler for dispensing, e.g., icing, from a squeezable bag, wherein the icing is twisted as it is dispensed. The coupler may attach between an icing bag nozzle and an icing dispensing tip, wherein members of the coupler are rotatable relative to one another, e.g., via a user's fingers or thumb. Alternatively, the coupler may include a modified icing bag nozzle as one of its members. The coupler may be used for twisting extrusions of other extrudable substances, e.g., chocolate mousse, etc.

Abstract: An extrusion die assembly configured to process a flow of extrusion material traveling in a downstream direction includes a first die component, a second die component and a third die component. The first die component includes a first channel that is substantially coaxial to a longitudinal axis. The second die component is received within a downstream side of the first die component and has a position that is adjustable along the longitudinal axis relative to the first die component. The second die component includes a second channel that is substantially coaxial to the longitudinal axis. The third die component is received within a downstream side of the second die component and has a position that is adjustable along the longitudinal axis relative to the second die component. The third die component includes a third channel that is substantially coaxial to the longitudinal axis.

Abstract: A resin-made interior member for an opening and closing body of the invention is a resin-made interior member to be attached to an inside of an outer panel of the opening and closing body and is formed by an injection molding method using a molding material of polypropylene type resin containing a reinforcing fiber and rubber and by properly setting the respective contents of the reinforcing fiber and the rubber component, the modulus of bend elasticity is improved by blending the reinforcing fiber without being accompanied with deterioration of the moldability as the material resin and the appearance of the molded product to improve rigidity of the interior member and impact resistance is assured by blending the rubber component to give the interior member with good moldability and appearance in form of the molded product and having a required rigidity and impact resistance.

Abstract: A nozzle for an injection molding machine is disclosed. The nozzle includes a nozzle body, an inner nozzle, and an outer nozzle. The nozzle defines two independent flow paths therethrough. The nozzle can simultaneously discharge two materials. A method of using the nozzle and a resulting golf ball product are also disclosed.

Abstract: An extrusion nozzle including an outlet port having a single opening with a first region, second region, and a pinched region between the two. The pinched region reduces the dimensions of the extrudate in relation to the dimensions associated with the first and second regions. In that way, the extrudate is joined together but may be easily separated into two separate pieces with dimensions related to the dimensions of the first and second region.

Abstract: An apparatus and method for molding plastic materials is provided comprising a mold having a first mold section (12) and a second mold section (14) with a mold cavity (16) disposed in between. A first gate design is provided by at least one first gate design mold member (40), and a second gate design is provided by at least one second gate design mold member. The first and second gate design mold members are removably attachable to, and interchangeable on, at least one of the first or the second mold sections (12, 14) to change from the first gate design to the second gate design.

Abstract: Disclosed is an injection unit having a rotatable device for preventing reverse flow. To connect first flow channels formed in a spacer and second flow channels formed in a screw head when the metering is performed, and prevent reverse flow of resin by cutting off the first flow channels and the second flow channels when the resin is injected, the injection unit has a torsion spring as spring means between a shaft of the screw head and a screw, thereby rapidly preventing movement of the melted resin by restoring force of the spring when the metering of the resin is finished.

Abstract: A die and cutter assembly for an extruder includes an elongated extrusion member having a first, open end and a second, closed end. The first, open end is attachable in fluid communication with a first manifold of the extruder, and the second, closed end is formed by a removable extrusion end cap. An extension is formed on the elongated extrusion member. A filling passageway is formed in a wall of the elongated extrusion member, which is attachable to a second manifold of the extruder. A first filling passageway extension is in communication with and removably mounted to the filling passageway. The first filling passageway extension generally transverse to the filling passageway and extends into the extension of the elongated extrusion member. An extrusion die is formed on the extension of the elongated extrusion member. A cutter member has an opened drivable end, an elongated cutter wall, and an opened cutter end with a cutting surface for cutting extrudate to a desired length as the extrudate exits the die.

Abstract: There is provided a plastic extrusion sizing tube having a cylinder with a split along its length to allow for radial expansion and reduction of the sizing tube. The cylinder has holes to allow an extrusion within the cylinder to be drawn to the cylinder by a vacuum outside the cylinder. The cylinder also has extensions on opposite sides of the split with an adjustment screw connecting the extensions. The diameter of the cylinder can be expanded or reduced when the adjustment screw is turned in respective directions. A set screw can be connected to one of the extensions. The diameter of the cylinder can be expanded or reduced when the set screw is turned in respective directions. The diameter of the cylinder can be locked in a desired position when the adjustment screw and the set screw are turned in the same direction. The adjustment screw and the set screw can be located in a flange at one end of the cylinder. The holes in the cylinder can be slots.

Abstract: A nozzle for an injection molding apparatus is provided. The nozzle includes a nozzle body, a heater, a tip, a tip surrounding piece and a seal piece. The nozzle body defines a nozzle body melt passage, which is adapted to be in fluid communication with an upstream melt source. The heater is thermally connected to the nozzle body for heating melt in the nozzle body melt passage. The tip is removably connected to the nozzle body. The tip defines a tip melt passage therethrough. The tip melt passage is downstream from and in fluid communication with the nozzle body melt passage, and is adapted to be upstream from and in fluid communication with a mold cavity in a mold component. The tip surrounding piece is removably connected with respect to the nozzle body. The tip surrounding piece is spaced from said tip. The seal piece is positioned between the tip and the tip surrounding piece.

Abstract: There is provided a pipe extrusion die that includes a first and second die assembly. The first and second die assembly each include an extrusion head, a nozzle carrying an outer die lip, a hollow mandrel, an inner mandrel carrying an inner die lip, and a layer-forming channel. The layer-forming channel is defined by the space between the nozzle and inner mandrel. The extrusion die includes a space between the nozzle of the second die assembly and the inner mandrel of the first die assembly such that the first and second die assembly do not share a common wall. The space between the inner and outer die lip (die gap) can be individually adjusted and the second die assembly is freely movable relative to the first die assembly. The extrusion die also includes a vacuum cooling mandrel with a single cooling channel and multiple vacuum ports that provide improved vacuum control over the final die product.

Abstract: An extrusion system for extruding a layer of a plastic or rubber material onto a work piece without having to continuously adjust the extrusion system during the “set-up” mode to “full-run” mode, wherein the extruded layer exhibits a predetermined cross-section size and a uniform wall gauge concentricity.

Abstract: A fermented or yeast leavened dough is continuously fed to a plurality of nozzles and extruded and twisted into a plurality of continuous twisted dough ropes without substantially increasing the density of the dough. The dough is fed to the nozzles by an extruder or pump which supplies the dough at a substantially constant pressure without substantial surging of the dough. Each nozzle may produce a plurality of dough ropes which are twisted together to form a continuous twisted dough rope. By avoiding a substantial increase in dough density during extrusion and twisting, a hard, glassy texture in the baked product is avoided and a crispy, non-vitreous texture is achieved. The dough twisting apparatus includes a manifold having a plurality of dough passageways and extruder pipes which extend from the downstream ends of the dough passageways. A rotary die cup is mounted on each of the stationary extruder pipes. Each die cup contains one or more die orifices.

Abstract: Extrudable materials are provided in a pre-packaged disposable container. The container includes a first end having a dispensing aperture and a second end containing a shuttle that may be advanced within the container to dispense or extrude the contents. The shuttle is advanced towards the dispensing aperture in incremental amounts corresponding to the desired amount of contents to be extruded. Advancement of the shuttle may be accomplished using an extruding device integral with the container or from a separate extruding device. The container and shuttle are configured such that when the shuttle is advanced to a position proximate to the first end, the shuttle is locked so as to prevent rearward retraction of the shuttle back to the second end of the container. When the desired quantity of food has been prepared, the user recycles or disposes of the container, eliminating or greatly reducing the necessary amount of required cleanup.

Abstract: A tubular film blowing head is provided with one outer and one inner nozzle ring between which a ring chamber is formed extending in a conical or parabolic manner towards the circular nozzle gap and of which the inner nozzle ring, which is provided with a central bore for exchanging the pressurized air, is connected by means of a screw connection to a central cone piece of the blowing head. This central cone piece has a bore that is aligned to the central bore. In order to create a screw connection between the inner nozzle ring and the center cone piece that is firm and simple to produce, the inner nozzle ring is connected to the central cone piece by means of a threaded bolt penetrating the central bore of the nozzle ring and provided with an axial bore in that the threaded bolt is screwed into the bore of the cone piece, which is embodied as a threaded bore.

Abstract: An arrangement in connection with clamping tools, which comprises a nozzle structure which consists of coaxially arranged nozzle elements and is arranged to form one or more layers which cover a flexible elongated element on the surface of the flexible elongated element, which passes through the innermost nozzle element, in which arrangement at least the head of the nozzle element, which controls the flexible elongated element, is a separate unit which is arranged to be pushed into its position in the direction of the flexible elongated element and provided with gripping means, which grip the innermost nozzle element of the nozzle structure as the unit arrives at the nozzle element. The joint between the separate unit and the nozzle element of the nozzle structure is arranged to be loosened by repulsive force acting on the separate unit in the direction of the flexible elongated element and the separate unit is arranged to exit from the nozzle structure in the direction of the flexible elongated element.

Abstract: A three piece nozzle assembly for injecting molten plastic in an injection molding machine carrying out a high pressure, high volume continuous molding process to mold thin walled parts. A nozzle housing has an internally threaded dual diameter bore in one end which receives in one bore portion an externally threaded shank of a nozzle. A sleeve is threaded into the other bore portion and is tightened adjacent to a flange on the nozzle shank to lock the nozzle to the housing and prevent the pressure of the injection molding from working the nozzle loose from the housing. A gap is formed between the sleeve and nozzle shank to reduce the thermal effects.

Abstract: A mold assembly is made up of a nozzle tip and a nozzle tip receiving housing. The nozzle tip has an outwardly projecting shoulder and a threaded base and the housing has a hollow stem with an internal recess and a threaded socket for receiving the base of the nozzle tip. The assembly further includes a locking member having both internal and external projections. The locking member fits over the nozzle tip with the external projection of the locking member locating within the internal recess of the housing stem and with the outwardly projecting shoulder of the nozzle tip trapped by the internal projection of the locking member to block unthreading of the nozzle tip from the housing.

Abstract: An apparatus for forming threaded molded parts such as closures for containers having improved means for unthreading the formed part from the mold core. The apparatus includes a cavity part and a core part, the cavity part being rotatable relative to the core part, such that simultaneous rotation of the cavity and opening of the mold results in unthreading of the part from the core. The mold cavity is rotationally coupled to a mold cavity rotator which is preferably driven by means of a rack. The rotation of the mold cavity is timed with the mold opening step such that the threaded part is unthreaded from the core as the mold plates are separated.

Abstract: A multiple extrusion nozzle having an outer extrusion segment and an inner extrusion segment for extrusion of casing, particularly potato dough casing material, having two or more axial cavities.

Abstract: An adjustable variable flow restriction element and an extruder containing the same are provided for mechanically controlling the bulk density of an extruded material. The adjustable flow restriction element is located in an extruder proximate to the die of the extruder in position to partially block the downstream flow of material through the extruder. The adjustable flow restriction element is structured to be capable of assuming one of a plurality of uniquely flow restrictive positions, where the degree of restriction of flow controls the bulk density of an extruded material. A method of mechanically controlling the bulk density of an extruded material by restricting the flow of the material through an extruder is also provided.

Abstract: An extruder for forming elongated articles made of a thermoplastic having a cross-section that varies along their length comprising a moveable means for defining an extrusion orifice.

Abstract: The present invention relates to a novel arrangement for attaching, by screw threads, one device to another wherein the one device has a greater thermal rate of expansion than the other and the devices are assembled at a temperature which is lower than that at which the two devices are regularly subjected. In particular, the novel arrangement maintains the security of the attachment where the differing thermal rates of expansion would normally cause the screw thread attachment to become loose.

Abstract: A guiding mechanism and method are provided for properly aligning molds or portions thereof, such as ejector plates, as they are cycled. The guiding mechanism is an improvement over conventional bushings which require that the mold in which the bushings are mounted to be removed from the press and disassembled and thereafter, the press fitted bushings are pressed out. Herein, the bushings are provided with a replaceable insert or portion that is easily disconnected from the remainder of the bushing such as by unthreading a threaded insert from a threaded bushing body without removing the mold half from the press. A first replaceable insert can be mounted in the bushing body which is sized to receive the leader pin to guide the leader pins therein and align the mold halves as they are moved to the closed position.

Abstract: The invention concerns a machine for making, cutting and shaping pasta, including at least one unit head for making, cutting or shaping pasta, in which is installed at least one pair of rollers, adjacent to each other and rotating around their respective substantially horizontal and parallel axes; it is equipped to process dough into sheet form or a sheet in the form of pasta, including, according to the invention, a hopper detachably fastened to the unit head to feed dough composed of flour and eggs or a sheet of pasta into the unit, this being without manual intervention of the operator after the introduction of the dough or sheet of pasta between the rollers in the unit head.

Abstract: An improved injection mold for molding an information recording disc is provided.

Abstract: The annular channel elongate nozzle of an extrusion die (10) suitable for use for extrusion into a travelling mold tunnel, has an inner core (16) profiled for attachment to any one of a number of interchangeable end fitting nozzles outlet (100). The profiling takes the form of a step between an upstream portion (22) of the core and a reduced diameter downstream portion (24). Each end fitting outlet has an annular sleeve (34) to fit about the downstream core portion to extend the surface of the upstream portion of the core. The sleeve abuts the step (26) thereby locating the end fitting outlet correctly. No locking means is necessary between the end fitting and the core in the region of the nozzle. Attachment may be effected between them at a location downstream of the point at which extrudate is extruded into the mold tunnel. Hence, attachment is not hampered by the presence of extrudate and the attachment (40, 20, 25) may not interfere with the flow of extrudate.

Abstract: Devices are disclosed for forming egg-yolk disks by wire-cutting egg-yolk material extruded from a main cylinder. The main cylinder ends to an extrusion-head. The extrusion head may be threaded on a cylinder to a desired degree, so that during the disk-cutting process, the cutting wire slides on the front surface of the extrusion head. The Devices may also have a mechanism for locking the extrusion head in position. Miscellaneous mechanisms for wetting the cutting wire are also disclosed.