Jointmaker Pro: Preventing Tooth Breakage

Created by Gabriel Izzo, Modified on Fri, 22 May at 4:07 PM by Gabriel Izzo

Jointmaker Pro v2 · Blade Care & Troubleshooting

Preventing Tooth Breakage

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 tooth breakage or premature wear. If blade teeth are breaking and there is no collision with any other components, the causes below are the most likely culprits.

Common Causes of Tooth Damage

Blade height set too high — first teeth are above the table surface, causing them to catch and snap on the workpiece edge.

Material density too high for the blade type being used.

Improper blade type selected for the cutting application.

Blade angle too aggressive for the workpiece material or thickness.

Best Practices to Prevent Blade Damage

✓

Start with the blade positioned so 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 for the correct starting position.

✓

Use a less aggressive blade angle and feed rate when working with harder materials.

✓

Match the blade type to the material — refer to the blade options table below.

PDF

JMPv2 Jointmaker Pro — Instruction Manual

harveyedu.com · See Page 11 for blade height setup

↗

JMPv2 Blade Options

Blade	Thickness	TPI	Kerf	Application
Crosscut A	0.4 mm	28	0.018″	Most commonly used. General purpose for soft and medium-density woods.
Crosscut B	0.3 mm	32	—	Ideal for soft woods and smaller, delicate workpieces.
Crosscut C	0.4 mm	28	0.023″	Best for dense hardwoods or cutting 0.023″ fret slots. Stronger tooth design.
Rip Blade	0.4 mm	16	—	For rip cuts, tenons, and dovetails. May require periodic gullet cleaning 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, switch to the Crosscut C blade — it features a thicker kerf and stronger 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.

Dense Hardwood Setup — Reference Image

Cutting Guide from the Manual

JMPv2 Cutting Guide — Manual Reference

For help selecting the right blade for your project or if tooth breakage persists, please contact our support team.