Best Dry-Cut Blade for 3/8" Porcelain + Arbor Size Explained

One of the most common questions we get: "Which continuous rim dry-cut blade is best for 3/8" porcelain, and will it fit my grinder with a 5/8" arbor?" Here's the full answer.

The Best Blade: Distar Perfect

For dry cutting 3/8" porcelain with an angle grinder, the Distar Perfect Diamond Blade is our top recommendation — and our #2 overall seller for good reason.

• Kerf: 1.5mm continuous rim
• Cutting style: Dry
• Segment height: 25mm
• Best for: Clean, chip-free cuts in ceramic and porcelain tile all day long

It's the workhorse blade — reliable, clean, and built for production use on standard porcelain thicknesses.

→ Shop the Distar Perfect Diamond Blade

Want Thinner, More Precise Cuts? Step Up to the Esthete 2.0

If you need a finer kerf and more precision — especially on rectified tile or tight joints — the Distar Esthete 2.0 is the next level up.

• Kerf: 1.1mm ultra-thin continuous rim
• Cutting style: Dry
• Best for: Precision cuts, minimal chipping, rectified porcelain

→ Shop the Distar Esthete 2.0

The Arbor Issue: 5/8" vs 7/8" — What You Need to Know

All full-size Distar blades use a 22.23mm (7/8") arbor. A 5/8" arbor measures 15.875mm — that's a significant difference. A blade with a 7/8" bore will not sit flush on a 5/8" spindle and should never be forced.

But First — Double-Check Your Grinder

This is the most common source of confusion: most standard angle grinders from DeWalt, Makita, and Milwaukee use a 7/8" arbor. What you may be reading is the spindle thread size — typically 5/8"-11 (meaning 5/8" diameter, 11 threads per inch). That's the thread spec, not the arbor bore size. They are not the same thing.

Check your grinder's manual or the spindle itself. Chances are your flange arbor is already 7/8" and the blade will fit perfectly.

Quick Reference

All Distar blades use a 7/8" (22.23mm) arbor. Use a reducer bushing if your grinder has a true 5/8" arbor.