42 TPI vs 30 TPI Razor Saw Blades for Crafting

Quick answer

Choose the 42 TPI blade for ultra-fine, clean cuts in soft materials like balsa wood and plastic. Choose the 30 TPI blade when you need faster cutting in tougher materials like fiberglass or model railroad tracks.

Trade-offs at a glance

• Cut speed: The 30 TPI blade removes material faster due to fewer, larger teeth. The 42 TPI blade is slower but produces a cleaner finish.
• Material compatibility: 42 TPI excels on soft materials like balsa wood, plastic, and thin sheets. 30 TPI handles tougher materials like fiberglass, thicker plastic, and model railroad tracks.
• Blade width and control: The 42 TPI blade is narrower (3/4") for tight, detailed cuts. The 30 TPI blade is wider (1-1/2") for straighter cuts and better stability on larger pieces.

Product facts

• Razor Saw Blades, 42 TPI, USA Made: Excel Blades Pull Saw Replacement Blade – 42 TPI, 3/4" x 5", made from hardened serrated steel. The 42 TPI delivers the finest possible cut for detailed hobby work on lightweight materials, minimizing tear-out.

  

• Razor Saw Blade, 30 TPI, USA Made: Excel Blades Pull Saw Replacement Blade – 30 TPI, 1-1/2" x 0.010" x 5", hardened serrated steel with soft metal backer. The 30 TPI blade cuts faster through denser materials like fiberglass and model railroad tracks, while the wider blade adds stability.

  

Which blade fits your project?

Best for

• Clean, precise cuts in balsa wood, soft plastic, and thin sheets: choose the 42 TPI blade
• Faster cutting in fiberglass, thicker plastic, and model railroad tracks: choose the 30 TPI blade

Not for

• Heavy-duty sawing of thick lumber or metal: consider a different saw type