LAIWOO Glass Cutting Disc 4 in Indestructible Diamond Blade - Chip

In this review the LAIWOO Glass Cutting Disc stands out as a specialist 4 in ultra-thin blade for anyone who needs clean, fast cuts in glass and similar hard materials. The biggest reason to buy is simple: the 1 mm diamond edge and upgraded brazing process deliver remarkably straight, chip free cuts and consistent grinding performance, which makes tricky cuts in glass, ceramic or wine bottles far less frustrating than with standard abrasive wheels. It performed predictably with both dry and wet cutting and felt built for repeated use.

Key Features

• Ultra-thin 1 mm blade: The 0.04 in thickness concentrates cutting force for fast, precise slices with minimal chipping on fragile materials.
• Diamond and alloy construction: Advanced diamond materials bonded to a high manganese steel substrate provide durable cutting life and good heat resistance.
• New brazing process: Improved manufacturing makes the diamond edge more secure so the blade stays sharp through longer continuous cuts.
• Versatile compatibility: The 4 in (100 mm) diameter with 20 mm arbor fits common 4 in angle grinders and marble machines for easy swapping.
• Dry or wet cutting: The blade works in both dry and wet conditions, letting the user choose the method that suits the job and reduces dust or heat build-up.
• Low noise and smooth finish: The design produces steady, uniform grinding force for a smoother cut surface and less finishing work.

Who It's For

The LAIWOO disc is aimed at hobbyists, glassworkers, and tradespeople who regularly cut glass, crystal, jade, tiles or upcycled wine bottles and need a thin, precise blade that reduces chipping. It is especially useful when straight, flat edges matter for finishing or gluing work.

Those who should look elsewhere include users who need aggressive material removal on concrete or very thick stone, since this blade is optimized for thin, controlled cutting on brittle materials rather than heavy demolition. Also, buyers who require larger diameters should select a different blade size.

Pros & Cons

Pros

• Very thin 1 mm profile yields cleaner, chip free cuts on glass and tiles.
• Diamond plus high manganese steel substrate and new brazing improve durability and heat tolerance.
• Fits standard 4 in grinders and can be used dry or wet, adding flexibility for different jobs.

Cons

• Not designed for heavy concrete or thick stone removal, so performance is limited on very hard, dense materials.
• Ultra-thin blades can be less forgiving if misused and require steady handling to avoid breakage of the workpiece.

Specifications

Brand	LAIWOO
Diameter	4 in (100 mm)
Thickness	0.04 in (1 mm)
Material	Diamond + alloy with high manganese steel substrate
Arbor Hole	20 mm
Package	5 pack indestructible discs
Grit	120#

Our Verdict

The LAIWOO Glass Cutting Disc is a strong choice for anyone cutting glass, ceramics or decorative materials who needs precise, chip free edges and consistent durability. It offers good value for frequent hobbyists and professionals who work with fragile materials and want a blade that fits standard 4 in grinders while allowing dry or wet cutting.

Frequently Asked Questions

Can this blade be used wet?
Yes, the disc is suitable for both dry and wet cutting to reduce dust and heat depending on the job.

Will it fit my 4 in angle grinder?
Yes, the 100 mm diameter and 20 mm arbor are compatible with standard 4 in (100 type) angle grinders.

Is it suitable for cutting thick stone?
No, the ultra-thin 1 mm blade is optimized for glass, tile and similar brittle materials and is not intended for heavy concrete or thick stone removal.