Jointmaker Pro: Preventing Tooth Breakage

Created by Gabriel Izzo, Modified on Mon, 23 Jun at 2:25 PM by Gabriel Izzo


Blade Selection and Performance Tips for the JMPv2 Jointmaker Pro

The JMPv2 Jointmaker Pro offers four distinct blade options, each designed for specific cutting applications. Choosing the correct blade and setup for your material is essential to avoid issues such as tooth breakage or premature wear.


If you're experiencing blade teeth breaking or becoming damaged—and there's no collision with any other components—there are several possible causes to consider:


Common Causes of Tooth Damage

  • Blade height is set too high (first teeth are above the table surface)

  • Material density is too high for the blade type

  • Improper blade type for the cutting application

  • Blade angle is too aggressive for the workpiece


Best Practices to Prevent Blade Damage

  • Start with the blade positioned so that the first few teeth are slightly below the table surface. This reduces stress and the likelihood of tooth breakage (see Page 11 of the JMPv2 Manual): Jointmaker Pro JMPv2 Instruction Manual 

  • Use a less aggressive blade angle and feed rate for harder materials.

  • Match the blade type to the material being cut:


JMPv2 Blade Options

BladeSpecsApplication
Crosscut A Blade0.4mm x 28 TPI; kerf 0.018"Most commonly used; general purpose for soft/medium woods
Crosscut B Blade0.3mm x 32 TPIIdeal for soft woods and smaller, delicate workpieces
Crosscut C Blade0.4mm x 28 TPI; kerf 0.023"Best for dense hardwoods or cutting 0.023" fret slots; stronger teeth
Rip Blade0.4mm x 16 TPIDesigned for rip cuts, tenons, and dovetails; may require cleaning gullets periodically during use


Recommended Setup for Dense Hardwoods

If you’re working with harder woods and experiencing chipping or breakage with Crosscut A or B blades, we strongly recommend switching to the Crosscut C blade, which features a thicker kerf and tooth design specifically built to handle dense materials.


Maintaining proper blade height and cutting angle will also help prolong blade life and ensure cleaner, more controlled cuts.


If you have any questions or would like guidance on selecting the right blade for your project, feel free to reach out—we’re happy to help!




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