Thick Copper Lap (3mm Laminated) for Pre-Polishing - 6" or 8" [Size: 6 inch]
4 units in stock
Premium Copper Pre-Polish Laps (3 mm laminated copper layer permanently bonded to master lap).
These 3mm thick laminated copper laps are designed to be more affordable option than solid copper laps but with plenty of copper thickness to allow for multiple resurfacing when necessary. Made using a 3 mm thick Cu bonded to an aluminium backing plate (master lap) and then precision machined. Has a half inch (0.5") centre hole suitable for all faceting machines.
Copper prices is still expensive so this Lap gives you an excellent quality lap that will last for many years without excessive cost.
These are individually wrapped in bubble wrap and packed in cardboard box for additional protection during shipping.
NOTE: Available in 6" or 8" diameter - selected required size from options above.
Guide to using COPPER LAPS.
Following the Diamond Laps, a Copper Lap can be used as for the pre-polish step. Load the copper lap with 3,000 grit polish using a small amount of oil as lubricant (sewing machine oil or Snake Oil works well). NB: you dont need to score a Cu Lap. Polish facets already cut. Light pressure is all that is needed. Get rid of all fine scratches - the better the polish you can achieve now will make the final polish easy. You only need to polish on a slow speed of about 2 or 3 (depending on material). Once all facets are pre-polished give the stone a good clean with water and detergent. NB: no water coolant at this stage.
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