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Kevlar Edge Lacing
A bundle of Kevlar fibers are laced/tied to each individual edge “T" and it’s partner on the opposite edge reducing edge tear-out..
You're Using What? Why?
The result is edges that are much harder to pull out of skis/boards. Kevlar is an interesting material. It is very light, whilst being shockingly strong in tension. It is also very tough and damage tolerant. It is a nightmare to cut; abrasion usually results in “fuzzing" of the fibers and not much else. Using it to tie the edges of the board/ski together is effectively tying the edges together with a tough, light, flexible very strong wire that doesn’t change the base profile significantly. It becomes very difficult to “zipper" the edge out of the board, and the Kevlar adds a bit of breaking strength/suport at 90 degrees to the base for the edge to help resist denting. This process also allows all edge t’s to be bonded with epoxy.
Lacing vs Conventional
Typically, edges are spot-bonded to the bases of skis/boards using cyanoacrylate adhesive (Krazy Glue is a typical example). When the ski/board is laid-up epoxy will adhere the remaining edge “T"‘s to the base and the sidewall/glass above it. Exegi’s Kevlar lacing process allows for perfect edge/p-tex tolerences and 100% epoxy bonding. Now, nothing really adheres to the base materials of skis and boards. The edges suffer this same fate. Base manufacturers prepare/treat their bases so that they will adhere acceptably to a large surface (like a ski!) but bonds to a flexing dissimilar material like a steel edge is suspect at best. The bond to the glass/sidewall structure above the edge is better, but most manufacturers have moved to enhance this bond further with rubber strips that double as adhesive enhancers and vibration damping materials (Exegi included). There is a mechanical bond provided by the inverted/negative of the edge “T" cast in epoxy during layup, but this is often smashed to dust in meetings with local (usually well hidden!) bedrock.
Exegi's Base/Edge/Sidewall Combo is Tough.
Our use of hard, tough, sintered bases, combined with solid 2 mm edges, laced with Kevlar, bonded with rubber and backed up/supported by seamless carbon fiber sidewalls yields the toughest, lightest edge support system around. The simple fact is that there is no way to eliminate rock damage to edges. Tying the edges together with Kevlar helps. It’s better than anything else, but nothing’s perfect. But at least your edges have a fighting chance to survive your next meeting with the planet.