This is a hell of a costume — a set of retractable galvanized metal Wolverine claws. Lethally cool.
The next step was to mount the claws to a ball-bearing track that could be hooked to the back of Nate’s forearm. The track was created from a sliding keyboard tray. The slider on the track was modified to be much shorter, and use only 8 ball bearings. Bolts were put through the slider on the track and then some galvanized metal was bent and hack-sawed to make the right shape for attaching the first claw. This required drilling holes through each galvanized metal pience and matching holes in the first claw. Once the first claw was fitted to the track, 2 other claws were then drilled to match the first, and 3″ and 3.5″ bolts were used with nuts, split washers, washers, and locking nuts to to space the claws apart and keep them tightly affixed to each other and subsequently to the track. Once this was complete, screws were added through the bottom of the track so that the slider could not slide out of the track (to avoid killing innocent bystanders). Pictured above the the fully extended claws on the track.
(via Make Blog)