Phenolic Polishing Laps

Phenolic Polishing Laps - Grooved Hard Fiber Laps for Diamond Compound Cabochon Polishing

Our Phenolic Polishing Laps are precision-ground hard fiber phenolic laps with a grooved surface designed to enhance diamond charge effectiveness for final shaping and polishing of hard gemstones. Available in Star Cab (single stone) and Double Cab (two stones simultaneously) configurations, both at 150mm diameter x 10mm thick with a 1/2" center hole. The hard phenolic material holds diamond compound charge evenly across the grooved surface for consistent, repeatable results on sapphire, ruby, garnet, and other hard gemstones.

Shop Phenolic Polishing Laps - $55.00

Available Options and Pricing

Product Size Best For Price
Phenolic Star Cab Grooved Lap 150mm x 10mm, 1/2" hole Single stone cabochon shaping and polishing $55.00
Phenolic Double Cab Grooved Lap 150mm x 10mm, 1/2" hole Two stones polished simultaneously $55.00

Compatible Applications

  • Hard gemstone cabochon polishing - sapphire, ruby, garnet, corundum (Mohs 8+)
  • Final shaping and pre-polish on hard lapidary stones with diamond compound
  • Single stone cabochon work - Star Cab configuration for focused single-stone polishing
  • Production cabochon polishing - Double Cab configuration for two stones simultaneously
  • Faceting machine lap use - 150mm diameter with 1/2" center hole for standard faceting spindles
  • Diamond compound charging - grooved surface retains compound for consistent polishing action

Key Features

  • Hard fiber phenolic construction - Durable, rigid lap surface for consistent diamond charge retention
  • Grooved surface - Enhanced diamond compound charge effectiveness across the full lap face
  • Ground flat and parallel - Precision-machined for consistent, repeatable polishing results
  • Double cab option - Polish two stones simultaneously for increased production efficiency

Related Tools

Frequently Asked Questions

  • Q: What is a phenolic lap used for in lapidary cabochon polishing?
    A: A phenolic lap is a hard fiber lap charged with diamond compound paste for final shaping and polishing of hard gemstone cabochons - particularly sapphire, ruby, garnet, and other corundum and hard mineral stones (Mohs 8+). The hard phenolic surface holds diamond compound charge firmly in the grooves for consistent, controlled polishing action.
  • Q: How do I charge a phenolic lap with diamond compound?
    A: Apply a small amount of diamond compound paste to the grooved lap surface and work it into the grooves with a piece of hardwood or a charging tool. Run the lap at low speed and press the compound firmly into the surface. Reapply compound as needed when polishing action slows.
  • Q: What is the difference between the Star Cab and Double Cab phenolic laps?
    A: The Star Cab lap is designed for polishing a single cabochon at a time with a star-pattern groove layout. The Double Cab lap is designed to polish two stones simultaneously - doubling production efficiency for cabochon polishing workflows.