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CMT Router Bit - Flush Trim Double Bearing 19mm 1/2" Shank

CMT Router Bit - Flush Trim Double Bearing 19mm 1/2" Shank

The innovative two-flute router bit is equipped with a double bearing and features a down shear de...

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Cmt Orange Tools Orange Cmt 806.690.11B Flush Trim Bit With Double Bearing, 2-Inch Cutting Length, 1/2-Inch Shank, Shk 1/2 | D 3/4 | Cl 2 | Ol 4-5/16

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AmazonCmt Orange Tools Orange Cmt 806.690.11B Flush Trim Bit With Double Bearing, 2-Inch Cutting Length, 1/2-Inch Shank, Shk 1/2 | D 3/4 | Cl 2 | Ol 4-5/16
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£38.57
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eBayCMT 806 Flush Trim Bit Double Bearing S-12.7 D-19 Price is Inc VAT@20%
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Product Information

Full details

This CMT 19mm flush trim router bit is designed for woodworkers seeking cleaner, smoother cuts on various materials, especially on curved elements. Its double bearing and down-shear design eliminate the need to flip the workpiece, significantly speeding up operations. However, it is exclusively for use on router tables and not suitable for handheld routers.

All features

Model Part Number806.690.11B
BrandCMT

Extended Product Information

FAQs

Can I use this bit with a handheld router?

No, this bit is specifically designed for use in router tables only. Its down-shear design requires the stability and consistent feed provided by a router table and is not safe or effective with handheld routers.

What materials is this router bit best suited for?

This bit is highly effective for cutting hardwood, softwood, and laminates. It is particularly useful for applications involving veneers and curved elements.

How do I clean the double bearings?

After each use, use a brush and a suitable solvent to clean away wood dust and resin. Ensure the bearings spin freely after cleaning. Avoid immersing the bearings in liquid for extended periods.

What does 'down shear design' mean?

A down shear design means the cutting edges are angled to pull the material downwards as they cut. This action helps to prevent tear-out and produces a cleaner finish, especially on the top surface of the material.

How often should I replace the bearings?

Bearings should be replaced if they become rough, noisy, or stiff when rotated. Inspect them regularly for wear and tear. Damage to the bearings will negatively impact cut quality and the bit's performance.

What is the shank size of this router bit?

This CMT router bit features a 1/2" shank.

Will this bit work with any router table?

As long as your router table accepts a 1/2" shank router bit and has a suitable collet, this bit will be compatible. The primary requirement is that it must be used in a router table setup.

Troubleshooting

Router bit chatters or vibrates during use.

Ensure the bit is securely tightened in the collet. Verify that the bearings are spinning freely and are not damaged. Check for any workpiece movement or instability on the router table.

Rough or splintered cut surface.

Clean the cutting edges of any buildup. Ensure the down-shear design is oriented correctly for your feed direction. If the problem persists, the bit may be dull and require sharpening or replacement.

Bit does not cut flush with the template or edge.

Verify that the bearing is making full contact with the template or workpiece edge. Ensure the bit is correctly seated in the collet and set to the proper depth. Check for any obstructions preventing the bearing from riding smoothly.

Excessive heat buildup on the bit.

Reduce the feed rate to allow the cutting edges to clear chips effectively. Ensure adequate dust extraction is in place to prevent chip recooling around the cutting area.

Pros and Cons

Pros

  • Achieves exceptionally clean and smooth cuts.
  • Down-shear design minimizes tear-out on delicate materials.
  • Double bearings offer superior stability and accuracy.
  • Saves time by eliminating the need to flip the workpiece.
  • Effective on a variety of wood types and laminates.

Cons

  • Strictly limited to router table use; not for handheld routers.
  • The 19mm cutting diameter may be too large for some detailed work.
  • Requires a router table setup, increasing initial investment for some users.

Setup, Compatibility & Care

Setup

  1. Mounting: Securely insert the 1/2" shank into your router table's collet. Ensure it is tightened properly to prevent slippage.
  2. Depth Adjustment: Adjust the cutting depth according to your material thickness and desired cut. Use the router table's lift mechanism for precise adjustments.
  3. Bearing Usage: If your application involves a template, ensure the bearing is in contact with the template's edge. For edge trimming without a template, ensure the bearing is positioned correctly relative to the workpiece edge.

Compatibility

  • Router Type: This bit is designed exclusively for use with router tables. It is not compatible with handheld routers due to the down-shear design and the need for stable, consistent feed.
  • Material: Suitable for routing hardwood, softwood, laminates, and similar sheet goods.

Care

  • Cleaning: After each use, clean the bit to remove wood residue and resin buildup. Use a non-flammable solvent or a specialized router bit cleaner. A stiff brush can help dislodge stubborn debris.
  • Inspection: Regularly inspect the bearings and cutting edges for signs of wear or damage. Damaged bearings or dull cutting edges will compromise cut quality and can be hazardous.
  • Storage: Store the bit in a dry place, ideally in its original packaging or a protective bit case, to prevent rust and damage to the cutting edges and bearings.

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