A lock and pin for the structural and fluid tight repair of cracks not amenable to high temperature repairs or synthetic material patches. Fluid tight pins and locks seal the crack while one or more locks prevent the crack from growing. These repairs need to endure the remaining life cycle of the machinery part while withstanding all the strain, pressure, heat and expansion and contraction of the part before the crack(s) were formed. Often these cracks evolved due to engineering design flaws that will require even greater strength from these areas than when new.

Jigs, fixtures, accessories, and the like for locating, aligning, guiding, engaging, and/or holding a workpiece on a woodworking machinery during a woodworking operation are described, as well as methods of making, modifying, and using jigs, fixtures, and accessories.

This invention includes a drill guide (drill depth stop and alignment tool), canting base attachment, and self-aligning dowel jig attachment that allows users to drill holes to prescribed depths into flat work surfaces using various sizes of twist and auger bits while eliminating marring and reducing wood splintering. The canting base attachment allows users to drill holes to prescribed depths and at variable angles into flat surfaces and both large and small cylinders with no free ends using various kinds and sizes of drilling tools without marring. The dowel jig attachment allows users to drill dowel holes to prescribed depths in edges and faces of work pieces that are evenly spaced apart by numerous gauged distances and at infinitely adjustable distances from edges. This invention has drill press-like capabilities and can be used in the field and in shops.

The device disclosed herein allows a user to maintain the outboard stabilator of a Blackhawk helicopter. The device, which comprises a kit, allows a user to remove damaged outdoor stabilator bushings from a Blackhawk. Upon removal, the device enables a user to install new outdoor stabilator bushings. Additionally, the device allows a user to ream the newly installed outdoor stabilator bushings so that the outboard stabilator may be reinstalled upon the Blackhawk and safely flown.

A machining tool assembly is provided for machining a blank to form a firearm lower receiver. The assembly includes a pair of side plates positionable on opposed sides of the blank to capture the blank therebetween. A template plate having a template aperture is adapted to be removeably attachable to the side plates. The template aperture is aligned with a top surface of the blank and is adapted for machining a cavity within the blank having a peripheral contour complimentary to a peripheral contour of the template aperture. A centering mechanism is adapted to be removeably attachable to the template plate, with the centering mechanism including an opening aligned with a corresponding void formed on the blank to align the blank with the template plate.

A lock and pin for the structural and fluid tight repair of cracks not amenable to high temperature repairs or synthetic material patches. Fluid tight pins and locks seal the crack while one or more locks prevent the crack from growing. These repairs need to endure the remaining life cycle of the machinery part while withstanding all the strain, pressure, heat and expansion and contraction of the part before the crack(s) were formed. Often these cracks evolved due to engineering design flaws that will require even greater strength from these areas than when new.

The device disclosed herein allows a user to maintain the outboard stabilator of a Blackhawk helicopter. The device, which comprises a kit, allows a user to remove damaged outdoor stabilator bushings from a Blackhawk. Upon removal, the device enables a user to install new outdoor stabilator bushings. Additionally, the device allows a user to ream the newly installed outdoor stabilator bushings so that the outboard stabilator may be reinstalled upon the Blackhawk and safely flown.

The device disclosed herein allows a user to maintain the outboard stabilator of a Blackhawk helicopter. The device, which comprises a kit, allows a user to remove damaged outdoor stabilator bushings from a Blackhawk. Upon removal, the device enables a user to install new outdoor stabilator bushings. Additionally, the device allows a user to ream the newly installed outdoor stabilator bushings so that the outboard stabilator may be reinstalled upon the Blackhawk and safely flown.

An assembly for guiding a drill bit of a drill assembly comprises a chassis and a centering bushing, comprising an exterior conical portion and a central opening. The assembly further comprises a vacuum-cup bracket, coupled to the chassis and adjustably positionable relative to the chassis along a second axis. The assembly also comprises vacuum cups, coupled to the vacuum-cup bracket. The assembly additionally comprises a pressure foot, coupled to the chassis at the first end of the chassis and adjustably positionable relative to the chassis along the second axis.

A clamp comprises first and second jaws that provide contact surfaces. The first jaw is elongated and has a longitudinal bore. The jaws are transversely hinged to maintain bore perpendicularity.