Long Live the Superstrop

I introduced the Superstrop about eight months ago, and have been using this one for over a year without having to recharge the substrate, which is a .1 micron Poly Crystalline Diamond spray.  And last month, seven students used it to make a total of 24 leather bindings. So I’m guessing one application of the diamond compound, which comes with a new strop, will last at least a number of years under normal use. The substrate itself is more durable than leather. It holds the small diamond particles in place, allows them to move around a little to expose sharp edges, and doesn’t glaze over.The small knife at the top right is a prototype paper conservation scraping knife. Get the Superstrop here

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