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Bosch 84508M 3-1/8-Inch Diameter 1-3/8-Inch Cut Carbide Tipped Lock Miter Router Bit 1/2-Inch Shank

by Bosch
4 out of 5 stars 1 customer review

List Price: $149.44
Price: $106.12 & FREE Shipping. Details
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Only 2 left in stock (more on the way).
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  • Enter your model number above to make sure this fits.
  • Recommended for use with a routing table
  • All bits must be inserted in the full length of the collet. Be sure to use only router bits and accessories specifically designed for your router
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5 new from $94.38

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$106.12 & FREE Shipping. Details Only 2 left in stock (more on the way). Ships from and sold by Amazon.com. Gift-wrap available.

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Product Description

Product Description

Premium-quality micro grain carbide tips are ground on specialized CNC equipment for an extra-fine finish with maximum sharpness and edge retention. Lock miter bit allows materials to join at 90° by cutting a 45° miter and perfect matching tongue and groove glue joint. This joint not only increases mechanical strength, but also increases glue surface area and automatically aligns parts. The fully hardened and tempered steel shank provides ultimate durability.

From the Manufacturer

Carbide tipped lock mitre bit is a micrograin control cut bit used for making right angle joints and glue joints

Product Information

Technical Details

Part Number 84508M
Item Weight 1.1 pounds
Product Dimensions 5.5 x 5 x 1.9 inches
Item model number 84508M
Material Carbide
Item Package Quantity 1
Batteries Included? No

Additional Information

Customer Reviews
4 out of 5 stars 1 customer review

4 out of 5 stars
Best Sellers Rank #405,432 in Home Improvements (See top 100)
#271 in Home Improvement > Power & Hand Tools > Power Tool Parts & Accessories > Router Parts & Accessories > Router Bits > Joinery Bits
Shipping Weight 1.1 pounds (View shipping rates and policies)
Domestic Shipping Item can be shipped within U.S.
International Shipping This item can be shipped to select countries outside of the U.S. Learn More
Date First Available July 2, 2004

Warranty & Support

Manufacturer’s warranty can be requested from customer service. Click here to make a request to customer service.

From the Manufacturer


Bosch router bits use micrograin carbide tips through a proprietary heat-treating process that delivers cutting precision and long life. Bosch router bits provide fast and precise cuts in plywood and other materials thanks to a shear angle cutting edge. This is a professional-grade bit for use in everything from woodworking shop applications to basement projects. The Bosch-exclusive laser depth scale features laser-engraved markings that allow for fast, easy set up and precise depth of cut.


Edge Forming


Surface Forming

Customer Reviews

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I have not had the problems with set-up that some have. Basically make sure that all the boards you use are exactly the same thickness, have nice feather boards or the like to ensure your passes through the router are consistent. Some basic measuring will get you with 1/128th within a couple trial pieces. There are a couple of issues - joints are very tight and will not allow room for much glue so you must work very fast especially on long boards and have many clamps ready. To get almost invisible joints, I averaged around 2-3" between clamps. I also feel that the depth of the tongue is too deep and creates a weak spot in the joint. The cut quality is excellent and has held up great. BTW- do not cut your boards with a 45 degree bevel first - this makes no sense what so ever, you would not have a tongue and just makes for a sharp edge against your fence. The reviewr is right, this will allow the bit to be less loaded but the joint will be useless.
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Bosch 84508M 3-1/8-Inch Diameter 1-3/8-Inch Cut Carbide Tipped Lock Miter Router Bit 1/2-Inch Shank
This item: Bosch 84508M 3-1/8-Inch Diameter 1-3/8-Inch Cut Carbide Tipped Lock Miter Router Bit 1/2-Inch Shank
Price: $106.12
Ships from and sold by Amazon.com

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