2" (45mm) Diamond Grinding Cup for Porcelain Tile & Stone | Soft Edge DGM-S

Best 2" (45mm) Diamond Grinding Cup for Porcelain Tile Edge Finishing

The DISTAR Soft Edge DGM-S 2" (45mm) diamond grinding cup is designed for smooth, controlled edge finishing on porcelain tile, ceramic tile, and natural stone using a compact angle grinder or Proxxon long-neck rotary tool.

Unlike aggressive grinding wheels, this diamond grinding cup features a soft bond that allows for precise material removal with minimal chipping, making it ideal for delicate edge work and finishing applications.

Designed for Smooth Edge Grinding on Porcelain & Ceramic Tile

This 2" (45mm) diamond grinding cup is engineered specifically for:

• Porcelain tile edge finishing
• Ceramic tile smoothing
• Refining cuts after using a diamond blade
• Preparing edges for polishing

What Materials Can This Grinding Cup Be Used On?

• Porcelain tile & porcelain gres
• Ceramic tile
• Granite
• Natural stone

Soft Bond Design for Minimal Chipping

The Soft Edge DGM-S uses a specialized soft diamond bond that provides:

• Smooth grinding performance
• Reduced risk of chipping porcelain tile
• Better control near delicate or glazed surfaces
• Consistent edge refinement

Built for Proxxon LHW/A, LWB/A & Compatible 45mm Tools

This diamond grinding cup is designed for use with the Proxxon LHW/A cordless long-neck angle grinder and the Proxxon LWB/A cordless long-neck rotary tool, as well as compatible 45mm angle grinders. Its compact 2" diameter makes it ideal for precision edge work in tight spaces where larger cups cannot reach.

Dry Grinding Performance for Jobsite Efficiency

Designed for dry use — no water setup required. Ideal for on-site tile work, quick edge corrections, and finishing without interrupting workflow.

Why Choose a Soft Edge Grinding Cup?

Standard grinding cups can be too aggressive and cause edge chipping, rough finishes, and loss of control. The Soft Edge DGM-S is designed to:

• Deliver controlled grinding
• Protect delicate materials
• Improve finish quality
• Reduce vibration for better handling

Grinding Cup vs Diamond Blade — What's the Difference?

• Diamond blade — used for cutting tile
• Grinding cup — used for smoothing and finishing edges after cutting

This grinding cup is the perfect next step after cutting with a Mastercut or Butterfly blade.

Product Specifications

Common Applications

• Edge finishing on porcelain tile
• Smoothing ceramic tile edges
• Refining cuts after blade use
• Preparing surfaces for polishing
• Detail grinding near glazed surfaces

Ideal For

• Professional tile installers
• Stone fabricators
• Countertop installers
• Remodeling contractors
• Advanced DIY users

Frequently Asked Questions

What is a diamond grinding cup used for?

It is used for grinding, smoothing, and finishing edges on tile and stone surfaces — typically after cutting with a diamond blade.

Is this good for porcelain tile?

Yes, it is specifically designed for porcelain tile edge finishing with minimal chipping, thanks to its soft bond diamond structure.

What tools is this compatible with?

It is designed for the Proxxon LHW/A cordless long-neck angle grinder and the Proxxon LWB/A cordless long-neck rotary tool, as well as compatible 45mm angle grinders with a 5/8"-11 thread.

Does it require water?

No, this grinding cup is designed for dry grinding applications.

Will it damage tile edges?

No, the soft bond design helps reduce chipping and improve edge quality compared to standard hard-bond grinding cups.

Works Well With

• Proxxon LHW/A Cordless Long Neck Angle Grinder — cordless long-neck angle grinder; purpose-built 45mm format for precision edge work
• Proxxon LWB/A Cordless Long Neck Rotary Tool — versatile rotary tool; also compatible with this 45mm grinding cup
• Mastercut 2" Diamond Blade — use the blade to cut, then this cup to finish the edge in one workflow
• Distar Butterfly 45mm Diamond Blade — precision cutting blade; follow with this cup for a polished edge
• Distar Water Guard Kit for Proxxon LWB/A — wet cutting system for the LWB/A; use before this cup for cleanest results
• Distar Hand Pad 2 Series — follow up with hand polishing pads for a mirror-quality edge finish
• Distar CoolPAD 2 Polishing Pad — power polishing pad for final edge finishing after grinding
• Distar Polishing Support Adapter — reduces bearing strain during extended grinding sessions

Further Reading

• Cutting, Grinding, and Polishing Porcelain Tile for Seamless 45° Corners
• How to Polish Porcelain Tile Edges with the Proxxon WP/A + Distar CoolPAD
• Finishing Cuts in Porcelain Tile Without a Tile Saw
• How to Cut Porcelain Tile Without Chipping

Returns can only be accepted for unused product in its original packaging. A copy of the original packing slip or invoice is required. Please see our return and refund policy here.

WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.