Quick Answer

Use a laser-welded, reinforced diamond blade designed for concrete with steel. The segments must be welded (not brazed) so they survive the impact of hitting rebar, and the bond should be hard enough to resist steel while staying sharp on the concrete matrix.

Key Features to Look For

• Laser welding: holds segments under impact when the blade hits steel.
• Reinforced core: a thicker or stress-relieved core resists distortion from rebar hits.
• Hard bond: resists wear from steel while the diamond cuts the concrete.
• Size and RPM: match the blade to the saw (hand saw, floor saw) and its rated speed.

How to Choose the Right Blade

Job	Recommended Blade	Why
Hand-held saw, rebar concrete	Laser-welded concrete blade	Survives impact, dry or wet
Floor saw, deep cuts	Large laser-welded blade	Cools well, stable at depth
Occasional rebar	Laser or HF welded	Strong joint at lower cost
No rebar	Standard concrete blade	Lower cost, fast cut

How to Use It Correctly

• Cut wet when possible to cool the segments and flush steel dust.
• Feed steadily and let the blade cut at its own speed — forcing it causes segment loss.
• After hitting rebar, ease off, then continue with even pressure.
• Inspect segments for cracks after jobs with heavy rebar.

Frequently Asked Questions

Q: Can a brazed blade cut rebar?

A: Only light steel. Repeated rebar hits will loosen brazed segments — laser welding is the safe choice for reinforced concrete.

Q: Should I cut rebar concrete wet or dry?

A: Wet is better — it cools the blade and controls dust. Use a dry-rated blade only for short dry cuts.

Q: How do I know if my blade is for reinforced concrete?

A>Check the label for "laser welded" and "reinforced concrete" or "steel" ratings, and confirm it fits your machine's RPM.

Conclusion

For reinforced concrete, invest in a laser-welded blade with a reinforced core — it pays back in fewer blade changes. The Concrete and Asphalt Saw Blade (Laser Welded) — JOY-CA-LW is built exactly for rebar-heavy work.