This lap is a mixture of cerium oxide and epoxy resin. It is a great lap for opals and the quartz, feldspar, and beryl families.

The cerium used in these laps is at least 99% pure.

    - Lap may require break-in. Run the lap at medium speed and, with a fast water drip, burnish the surface with 240 grit wet-dry sandpaper for 3-5 seconds. Reverse direction of the lap and repeat. The surface only needs to be roughened to release the embedded cerium oxide powder.

    - Do not run lap dry

    - The lap only needs to be moist to function. Use of a fine mist spray bottle or a slow water drip (1 drop every 3 seconds) is recommended.

    - If polishing action is slow, add a small amount of cerium oxide to the lap. A high purity cerium oxide crayon from Gearloose (gearloose.co) is recommended.

    - Recommended lap speed: 60 to 300 RPM

    - For best results, add a small amount of baking soda to your water supply to raise the pH to slightly alkaline (pH: 8)

Lap diameter: 8" (203 mm)
Arbor hole: 0.5" (12.7 mm)
Cerium compound thickness: 1.5 mm 
Lap thickness: approx. 0.3" (7.5 mm)

PREORDERS ACCEPTED FOR OUT OF STOCK ITEMS. PREORDERS ARE EXPECTED TO SHIP 10 DAYS AFTER THE DATE OF PURCHASE.

Invented and manufactured by Allan Lindberg (ABL)

If ordering faceting rough or cut gemstones in addition to laps, please contact us to set up your order.