Disclosed is a line catcher type water jet cutting apparatus. Portions of a workpiece to be converted into products are processed by water jet cutting in a common manner in an early stage of the water jet cutting. In a final stage of the water jet cutting, product fixing pushers press and fix the workpiece.

Textured cover assemblies for electronic devices are disclosed. The textured cover assemblies may provide a combination of optical and tactile properties to the electronic devices. In some cases, a textured cover assembly may be provided over decorative coating.

A mask is provided for an additively manufactured part including a plurality of spaced openings in a surface of the part. The mask is made with the part and includes an attachment ligament configured to integrally couple to the part between the openings in a cantilever fashion. First and second cover members include a proximal ends integrally coupled to the attachment ligament and distal ends extending at least partially over a respective portions of the plurality of openings. A detachment member extends from each of the first and second cover members. The attachment ligament is the sole connection to the part. The mask may have an umbrella shape in cross-section.

Essential constructive elements of the currently known machines and devices, which work by means of vacuum blasting, are improved in the surface cleaning and engraving machine that operates via a vacuum jet process in order to enable more effective cleaning of different surfaces, further applications and simplification of the handling of the machine or device. With the modifications and additions made, the application options of the machine or device are increased, the potential of clogging the suction hose is reduced to a minimum, the service life of the machine is extended and the efficiency and operating options of the blasting hood are improved. For this purpose, technical and design details of an already known machine are supplemented and improved; there are, for instance, a metering device (3), additions to the blasting hood (6) and measures to extend the service life of the machine by using rock impact films (31).

Essential constructive elements of the currently known machines and devices, which work by means of vacuum blasting, are improved in the surface cleaning and engraving machine that operates via a vacuum jet process in order to enable more effective cleaning of different surfaces, further applications and simplification of the handling of the machine or device. With the modifications and additions made, the application options of the machine or device are increased, the potential of clogging the suction hose is reduced to a minimum, the service life of the machine is extended and the efficiency and operating options of the blasting hood are improved. For this purpose, technical and design details of an already known machine are supplemented and improved; there are, for instance, a metering device (3), additions to the blasting hood (6) and measures to extend the service life of the machine by using rock impact films (31).

A method of making a printed circuit board includes a step of providing a double-sided plate that is an insulating substrate having conductive layers on respective surfaces thereof, a first coating step of coating a first surface of the double-sided plate with a first photosensitive resin film, a second coating step of coating a second surface of the double-sided plate with a second photosensitive resin film, a first exposure step of exposing the photosensitive resin film coating the first surface after the first and second coating steps, and a second exposure step of exposing the photosensitive resin film coating the second surface after the first exposure step, wherein a maximum depth of a depression in an outermost surface of the second photosensitive resin film used in the second exposure step is less than 1.0 μm.

A process for etching glass includes: loading a piece of glass on a flatbed digital printer; applying a selected pre-coat solution to the glass to prevent the ink from permanently adhering to the glass; printing a mask having a selected pattern on the glass with the digital printer; sandblasting the masked glass; stripping away the mask from the glass to reveal the etched glass; and cleaning any residual mask and/or pre-coat solution from the glass.

A process for etching glass includes: loading a piece of glass on a flatbed digital printer; applying a selected pre-coat solution to the glass to prevent the ink from permanently adhering to the glass; printing a mask having a selected pattern on the glass with the digital printer; sandblasting the masked glass; stripping away the mask from the glass to reveal the etched glass; and cleaning any residual mask and/or pre-coat solution from the glass.

A method of creating a design on complex curves and irregular contours of a protective helmet, quickly and without having to first disassemble the helmet. A design is transferred to a clear film/acetate, which is then exposed onto a photoresist mask, transferring the design to the photoresist mask. The mask is washed out creating blast-able areas in the design mask. The mask is adhered to an area of the helmet, which is otherwise covered with a sealed protective bag. Sandblasting/abrasive-blasting etches portions of the helmet surface through the blast-able area of the mask. Various colors or other special effects may be painted/applied onto the etched portions of the helmet surface. The protective bag and photoresist mask can be removed, and the painted areas buffed/polished in a final step.

A method of creating a design on complex curves and irregular contours of a protective helmet, quickly and without having to first disassemble the helmet. A design is transferred to a clear film/acetate, which is then exposed onto a photoresist mask, transferring the design to the photoresist mask. The mask is washed out creating blast-able areas in the design mask. The mask is adhered to an area of the helmet, which is otherwise covered with a sealed protective bag. Sandblasting/abrasive-blasting etches portions of the helmet surface through the blast-able area of the mask. Various colors or other special effects may be painted/applied onto the etched portions of the helmet surface. The protective bag and photoresist mask can be removed, and the painted areas buffed/polished in a final step.