Product Description
The CMT Router Collet Extension with 1/4 in. Collet is a precision-machined steel accessory designed to extend a router's reach into deep recesses and cavities that standard bits and collets simply cannot access. Featuring a 1/2 in. shank for secure chuck engagement and a 1/4 in. collet for accepting smaller-diameter router bits, this extension opens up routing possibilities on thicker workpieces, deeply profiled edges, and hard-to-reach interior cuts. Machined from super strength steel, it delivers the concentricity and rigidity needed for clean, accurate routing passes - making it a reliable solution for woodworkers working with hardwoods, softwoods, sheet goods, and more.
Key Features
- Super strength steel construction - provides the rigidity and durability needed to maintain consistent bit alignment during extended-reach routing operations, reducing vibration and deflection.
- Precisely machined for accuracy - tight manufacturing tolerances ensure concentricity between the shank and collet, resulting in smooth rotation, minimal runout, and clean cutting performance.
- 1/2 in. shank diameter - fits the collet of most full-size hand routers, giving the extension a stable, secure connection to the machine and helping to minimize chatter.
- 1/4 in. collet included - accepts a wide range of commonly available 1/4 in. shank router bits, so no additional collet purchase is needed to get started.
- 3-3/16 in. total length - provides meaningful additional clearance beyond a standard collet setup, making it possible to reach into deep mortises, cavities, and recesses that would otherwise be inaccessible.
- 6.35 mm bore diameter - matches the metric equivalent of a 1/4 in. collet bore, ensuring compatibility with both standard and metric-dimensioned 1/4 in. shank bits.
Why This Product
- Solves the deep-reach problem - when a standard collet and bit combination cannot reach the bottom of a deep recess, mortise, or profiled cavity, this extension adds the length needed without requiring a specialty long-shank bit.
- Precision machining means predictable results - because the extension is precisely machined for concentricity, woodworkers can trust that the bit will run true, reducing the risk of oversized cuts or rough surfaces caused by runout.
- Broad material compatibility - suited for use in hardwood, softwood, plywood, MDF, chipboard, laminates, and plastics, making it a versatile addition to any router setup rather than a single-purpose tool.
- Ready to use with 1/4 in. bits - the included 1/4 in. collet means the extension is complete out of the box, compatible with the most widely available router bit shank size on the market.
Specifications
- Manufacturer Part Number: 796.001.01
- Brand: CMT Orange Tools
- Diameter: 1/4 in.
- Bore Diameter: 6.35 mm
- Total Length: 3-3/16 in.
- Shank: 1/2 in.
- Material: Steel
Approved Applications
- Extended reach routing into deep recesses and cavities
- Routing hardwood and softwood workpieces
- Routing plywood, MDF, and chipboard
- Routing laminates and plastics
Frequently Asked Questions
What shank size does this collet extension use, and will it fit my router?
This extension uses a 1/2 in. shank, which fits the 1/2 in. collet found on most full-size hand routers. If your router accepts 1/2 in. shank bits, this extension should be compatible with your machine.
What size bits can I use with this collet extension?
The extension includes a 1/4 in. collet with a 6.35 mm bore, so it accepts standard 1/4 in. shank router bits - the most commonly available bit shank size for general woodworking applications.
How much additional reach does this extension provide?
The total length of the extension is 3-3/16 in. This allows the attached router bit to reach significantly deeper into cavities, mortises, and recesses than a standard collet-and-bit setup would permit.
Is this extension suitable for use in materials other than wood?
Yes. In addition to hardwood, softwood, plywood, and MDF, this extension is appropriate for use in chipboard, laminates, and plastics, making it a versatile tool for a range of routing tasks beyond basic woodworking.
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