Lightning Lap Concave Faceting Mandrels

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  • Product Description

      Lightning Lap Concave Faceting Mandrels

      The LL-Mandrels precision-made concave laps are used to cut and polish enhanced concave facets on a design you've already cut on a gemstone. Several companies make concave faceting equipment. The two most notable are Polymetric and OMF-concave Faceting machines, and Ultra Tec Fantasy Machines found at

      The advantage of the LL-Mandrel is in the ability to have just one lap to do all your work, just by cleaning and changing the polishing medium. Your angle-integrity is preserved, as there are no lap changes. Lightning Lap Natural Mandrels can be used with 1200 or finer grit diamond bort, spray or paste. You can also use waxes with oils, water or any kind of oxide polish.

      You can clean with alcohol or soap & water, then apply the next polish. However, most users dedicate 1 lap to 1 polish for fast polish changes; and to reduce polishing medium expenses.

      The Lightning Lap Mandrels are harder than cast iron and hold your polishing medium on the surface. They are very durable and should last for many years of service.

      The mandrels can be purchased separately or in sets of 4 or 6. Each #1 set of LL-Mandrels (one each of 13 mm, 15 mm, 17 mm and 19 mm diameter mandrels).  #2 set of Natural LL-Mandrels has one each of 9 mm, 11 mm, 13 mm, 15 mm, 17 mm and 19 mm diameter mandrels.

      Occasionally, some want to have multiple-matched diameter mandrels. We can provide these as well. Just contact us.

  • About Us
    • With advancements in technology, Lightning Lap has continued to evolve since inception. Our goal has been to help meet the needs of lapidary users everywhere. If it wasn't for the wonderful community at large, Lightning Lap wouldn't even exist. It is your honest input that has stirred the juices of thought and experimentation. Thanks to all supporters and aficionados of LL products which have come to life for you; and even for some, because of you. For without your friendship and support, none of these ideas would likely exist. Still, we must not rest on our laurels. New paths to perfecting brightness await the mind and hand!

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  • Product Details
    • Variant: 9 mm
    • SKU: LLM9NAT
    • In Stock: -9
    • Weight: 1.0 lb
    • Product Type: Mandrels