In this way we can help you overcome any initial fears regarding the application of ultramicrotomy and durability of the expensive diamond knife. This free custom testing program benefits us both. DDK's technicians get the opportunity to add to the wide variety of materials they have successfully sectioned. You are able to prove that the technique will contribute to your work, minimizing the risk of the equipment investment. All of the products of Delaware Diamond Knives are made here in the US with the finest materials, the most precise equipment, the highest level of craftsmanship and the most exhaustive testing program available.
Raw diamond is free from inclusions and shows only minimal stress under polarized light.
Near-perfect octahedral crystals are chosen so that internal structure is optimal. This orientation allows us to polish parallel to the final edge providing a perfect edge with superb durability. DDK Diamond Knives regularly last for many years before requiring resharpening. Diamond slabs are mounted in bronze using a powder metallurgy technique to prevent looseness. The slabs are oriented to leave a large amount of diamond in the shank insuring a tight grip and leaving a large resharpening reserve.