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CMT 543.064.51 Mortise Chisel & Bit Set, 1/4-Inch Diameter, 3/4-Inch Shank

by CMT
3.7 out of 5 stars 15 customer reviews

List Price: $21.25
Price: $20.55 & FREE Shipping on orders over $35. Details
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Only 11 left in stock (more on the way).
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  • Made of heavy-duty steel, 1 cutting edge.
  • For mortising and jointing with strength and accuracy.
  • For use in any standard drill press mortising attachmentof mortising machine.
  • Right-hand rotation.
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$20.55 & FREE Shipping on orders over $35. Details Only 11 left in stock (more on the way). Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

  • CMT 543.064.51 Mortise Chisel & Bit Set, 1/4-Inch Diameter, 3/4-Inch Shank
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  • CMT 543.127.51 Mortise Chisel & Bit Set, 1/2-Inch Diameter, 3/4-Inch Shank
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  • CMT 543.095.51 Mortise Chisel & Bit Set, 3/8-Inch Diameter, 3/4-Inch Shank
Total price: $61.73
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Product Description

Product Description

It’s tough to beat the “old faithful” mortise and tenon joint for strength and accuracy, even with all the other joining options in the world of woodworking. It isn’t the easiest joint to make, but it sure helps to have the best quality tools in your shop.

From the Manufacturer

It's tough to beat the "old faithful" mortise and tenon joint for strength and accuracy, even with all the other joining options in the world of woodworking. It isn't the easiest joint to make, but it sure helps to have the best quality tools in your shop. That's why we've added a new selection of Chisel and Bit sets in all the popular sizes, from 1/4" to 34" diameter. These sets are for use in any standard drill press mortising attachment of mortising machine. Shank size : 3/4-Inch

Product Information

Technical Details

Part Number 543.064.51
Item Weight 0.3 ounces
Product Dimensions 6 x 2 x 2 inches
Item model number 543.064.51
Material High Speed Steel
Item Package Quantity 1
Cutting Diameter 0.75 inches
Batteries Required? No
Warranty Description CMT carbide and carbide-tipped router bits and saw blades are designed, engineered and manufactured to uncomprimising standards for optimum cutting performance and maximum service life. If for any reason you are not satisfied with the performance of your CMT router bits, and the bits were used for their recommended applications, you can return them to CMT for a full replacement. Warranty excludes dull, misused, damaged, and/or resharpened bits. CMT is not liable for damages to goods, property or persons, due to improper installation or misapplication of equipment.

Additional Information

ASIN B000P4JJUI
Customer Reviews
3.7 out of 5 stars 15 customer reviews

3.7 out of 5 stars
Best Sellers Rank #192,758 in Home Improvements (See top 100)
#110 in Home Improvement > Power & Hand Tools > Power Tool Parts & Accessories > Power Drill Parts & Accessories > Drill Bits > Boring Drill Bits
Shipping Weight 0.3 ounces (View shipping rates and policies)
Domestic Shipping This item is also available for shipping to select countries outside the U.S.
International Shipping This item can be shipped to select countries outside of the U.S. Learn More
Date First Available January 9, 2007

Warranty & Support

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

Customer Reviews

Top Customer Reviews

Verified Purchase
Simply put.. this is an excellent hollow mortise chisel at a reasonable price. The machining is good but does require some honing to take off light machine marks. And you should hone the inside of the chisel also to really get it sharp. But.. most chisels costing 3-4 times more require the same procedure to get them up to the maximum they can achieve. The tolerances between the bit and chisel are excellent as the bit is also well made. Very sturdy over-all construction.

You should keep in mind that this is a 3/4" shank as most CMT's are. I also have the 3/8".. 1/2".. 3/4" as I do a lot of A&C carcass work.. work-bench's and various sizes are required for mortise and tenon and mortises to recieve accent pieces on the A & C. The 3/4" shank is not a problem on my Industrial floor mortiser but if you have a standard floor mortiser or bench-top.. make sure it accepts the 3/4" or have a bushing that will adopt to accept the 3/4" shank!
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Verified Purchase
I have a 12" delta drill press, with mortising attachment. This does not fit the delta mortising attachment. The diameter of the base of the chisel is 3/4", too big for the delta mortising attachment.
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Verified Purchase
I bought various sizes of CMT Mortise Chisel bits for my Mortising machine. The bits are accurately machined and pretty rough on the outside. I spend about 30 minutes per chisel to polish the chisel but some machine marks were so deep that I could not remove them. After polishing I also sharpened the chisel. The Auger had also many machine marks and I spend 15 minutes per auger to remove the marks and also trim the cutting edges which protruded slightly above the edges of the chisel and caused light drill marks inside the mortise.

After this initial tuning the bits are performing good. The bits are holding sharp edges well and eject chips good without any overheating. I wish CMT could decide if they are building long shaft or short shaft Augers though. The 1/4" Mortise chisel and a few sizes up, they are long shaft, but larger sizes like 3/4" and 1" are short shafts. This is not really convenient if one needs to change sizes often, as it requires me to remove the chuck from the Mortiser to put a spacer in for short shaft chisels, and remove it for short shafts.
Would I buy them again? I would take a look at Powermatic and Lee Valley chisels before making the decision.

Pics below show chisel before and after polishing.
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By Mike on October 12, 2011
Verified Purchase
No problems. I'm happy with the CMT chisel & bit sets. Chisel is sharp and can be sharpened. The bit seems a bit light, however.
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Verified Purchase
Nice, but, as with any mortise chisel (and most woodworking tools) you have to sharpen it before use.

On this one I find that the auger bit is somewhat "weak" and may not be adecuate for heavy duty applications, but being so small and thin, I think it would be difficult to make it sturdier. (Might be a good idea to have a replacement on hand, in case it bends or breaks)
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Verified Purchase
i have purchased cmt products in the passed and have had no problems the chisel bent after just a few mortises and that may be because the drill bit is so light it broke also. i have mortised 1000's of mortises with my oliver mortiser and have broken bits after long usage but never right out of the box. i guess i will be going back to grizzly and stay with the chinese ones. oh well
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Verified Purchase
I bought several of these bits to use with my jet mortise machine. Save some time, don't but CMT. I have used two different sizes (1/4 and 5/16) they both bent after drilling less then 10 mortises. My bigger bits have not bent (yet), but I have not used them much. This bit ruined a good piece of walnut.
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By Dust Man on January 27, 2014
Verified Purchase
I needed to cut several mortises in a large hard maple dowel rod, a tough job. I supported the dowel with a V-groove block, and the CMT bit did the job. The mortises may not have been as clean as they would have been in flat stock, but I thought they were very good for a rounded surface. - Dust Maker
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CMT 543.064.51 Mortise Chisel & Bit Set, 1/4-Inch Diameter, 3/4-Inch Shank
This item: CMT 543.064.51 Mortise Chisel & Bit Set, 1/4-Inch Diameter, 3/4-Inch Shank
Price: $20.55
Ships from and sold by Amazon.com