Canvas Polishing Pads

Canvas Polishing Pads – Firm Canvas Pads for Lapidary, Glass & Gemstone Polishing

Tightly woven canvas polishing pads that hold polishing compounds evenly for controlled, consistent polishing on stone, glass, ceramics, metals, and gemstones on flat lap machines. Firmer than felt for better control on medium-hardness stones, yet gentler than leather for stones requiring a softer touch. Available in 6" and 8" diameters with velcro backing or 1/4"-20 screwback mounting for master lap systems.

🔥 Shop Canvas Polishing Pads – From $6.00

Product Format Guide

Size Mounting Price Best For
6" Velcro Backing $6.00 Standard flat lap machines with velcro backing plates
6" 1/4"-20 Screwback $26.00 Master lap systems with screwback spindle
8" Velcro Backing $22.00 Larger flat lap machines with velcro backing plates
8" 1/4"-20 Screwback $37.00 Master lap systems with screwback spindle, production use

Pad Selection Guide

Stone Type Hardness Recommended Pad Compound
Agate, jasper, quartz Mohs 7 Canvas or leather pad Diamond compound 8,000–50,000 grit
Glass, fused glass Mohs 5.5–6 Canvas pad Cerium oxide
Turquoise, labradorite Mohs 5–6 Canvas or felt pad Cerium oxide
Opal, amber Mohs 5–6 Felt pad (softer) Cerium oxide, low speed

Compatible Applications

  • Flat lap machine polishing — 6" and 8" pads for all standard flat lap machine platens
  • Gemstone cabochon polishing — agate, jasper, quartz, turquoise, labradorite with diamond compound or cerium oxide
  • Glass polishing — art glass, fused glass, optical glass with cerium oxide on canvas
  • Ceramic and porcelain polishing — medium-firm canvas surface for controlled compound action
  • Master lap systems — 1/4"-20 screwback pads for bench polisher spindle mounting
  • Velcro quick-change systems — fast pad swaps between polishing stages on flat lap machines

Related Tools

Frequently Asked Questions

  • Q: What is the best polishing pad for lapidary cabochon polishing on a flat lap machine?
    A: Canvas pads are an excellent all-around choice — firmer than felt for better control on medium-hardness stones, yet gentler than leather for stones that need a softer touch. Use canvas pads with cerium oxide for glass and soft stones, or with diamond compound paste for harder stones (agate, jasper, quartz Mohs 7).
  • Q: How do I use a canvas polishing pad with cerium oxide to polish glass on a flat lap?
    A: Wet the canvas pad surface lightly with water, apply a small amount of cerium oxide compound, and run the flat lap at low to medium speed. Keep the pad lightly moist throughout polishing — cerium oxide works best slightly damp for a water-clear mirror finish on glass.
  • Q: What is the difference between a velcro backing and a screwback canvas polishing pad?
    A: Velcro backing pads attach to flat lap machines with a velcro backing plate — easy to swap between polishing stages without tools. Screwback (1/4"-20 thread) pads thread directly onto master lap spindles for a more secure, rigid mounting on bench polishers.