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Model#: DWWN17-924

What are the different product conditions?

Brand new items;Full manufacturer warranty available
Manufacturer inspected, repaired and tested items; CPO 60 day money back guarantee
Open Box
New or Recon items with possible minor cosmetic damage; CPO 60 day money back guarantee
Returned items inspected, repaired and tested by CPO technicians; CPO 60 day money back guarantee

Delta 17-924 Mortising Attachment with Four Chisel and Bit Sets

  • Delta 17-924 Mortising Attachment with Four Chisel and Bit Sets
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  • Offers large 4 in. capacity under hold-downs
  • 2-3/4 in. from ends of hook rods to fence
  • Fits drill presses with quill diameters of 66mm, 50.9mm, 48mm, and 38mm
  • Also fits Sears model 21313 and 21317 drill presses
  • Mortising Attachment w/ Four Chisel & Bit Sets - 17-924
  • (4) Chisels and Bits - 1/4 in, 5/16 in, 3/8 in, and 1/2-in
  • Carrying Case



4.4 / 5.0
12 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
Would you recommend?
Yes (9)
No (1)
Easy To Use (1)
Versatile mortising attachment
Use to establish mortise cuts in my side escapement planes.
Relatively easy set up---and easy to use. No, it's obviously a stand alone mortising machine, but works fine for my uses!
July 5, 2012
Yes, I would recommend this to a friend
Well Made Tool
With this Delta mortising attachment I will be able to build quality replacement window sashes.
November 15, 2012
Yes, I would recommend this to a friend
Delta Mortising Attacment
This item comes in a case, and works perfectley right out of the box.
A good buy at the price point.
May 1, 2013
Yes, I would recommend this to a friend
Great product, perfect!
This tool works great, take time to use so dont rush it and you will get great results. Watch the attatched youtube link, shows a good set up. Make sure you practice on scrap wood and you will be please with results. Totally worth it.
November 7, 2013
Yes, I would recommend this to a friend
Delta(R) mortising attachment and bits
Product was complete set up, easy to set up and did drill out mortises as expected. Rather uneventful when everything works as advertised. Good accessory.
July 21, 2015
Yes, I would recommend this to a friend
Easy To Use
Delta quality,as expected
I was blown away at the low cost!! [$]!!! In this inflated times, Just the 4 mortise chisels are worth the total cost of the complete set up!!
December 16, 2011
Yes, I would recommend this to a friend
Delta drill press mortising attachment
Tool works great. Came with all the adapters and bits. No trouble to setup or to use. Clean cuts and over lap removal.
Speedy shipping, arrived several days ahead of schedule.
Tyler Tool was competitive with other dealers, Delta product was better than the cheaper knock off brands.
July 1, 2015
Yes, I would recommend this to a friend
This is the tool I expected to get!
Great addition to my tools.
Making mortises is alot faster
February 3, 2012
Yes, I would recommend this to a friend
Great tool
Made my furniture building projects alot faster and more accurate was drilling holes and chiseled took way to long great investment
January 27, 2016
Returned promptly, didn't fit my drill
The setup was not as bad as others described other than trying to use the quick turn handles. The handle to mount the arbor attachment was already worn when I opened the box. The two handles in base mount made the attachment harder than simply a bolt, washer and nut. Once I finished the setup, I found the chuck on my Skil benchtop drill press was too small for the bits to reach more than 1/4" beyond the chuck attachment. Therefore, I cannot comment on alignment or accuracy. I returned it the next day. With a larger chuck, this unit may ultimately have worked fine.
June 13, 2015

Questions & Answers

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Browse 3 questions Browse 3 questions and 4 answers
How long are the mortising bits. In other words, what is the maximum depth of mortise I can get?

Will it work with the new 18-900L?
marco on Feb 27, 2013
BEST ANSWER: The maximum deep is between 2-3/4" and 6" depending on your drill. Yes you can used this set on the 18-900L.
Rating Comment referred to U-Tube demonstration. What is the link. I would like to see it in use before buying.

charles on Feb 5, 2015
BEST ANSWER: Here is a youtube link using this model number:
Are Mortising bits available separately from the set of chisel and drill bit?
Michael on Oct 10, 2013
BEST ANSWER: We do not stock just the mortising bits by themselves. If you do a Google search you can find numerous supplies to help you.


Two Year Limited New Product Warranty on DELTA Accessories

DELTA will repair or replace, at its expense and at its option, any new DELTA machine, machine part, or machine accessory which in normal use has proven to be defective in workmanship or material, provided that the customer returns the product prepaid to a DELTA factory service center or authorized service station with proof of purchase of the product within two years and provides DELTA with reasonable opportunity to verify the alleged defect by inspection. For all refurbished DELTA product, the warranty period is 180 days. DELTA may require that electric motors be returned prepaid to a motor manufacturer’s authorized station for inspection and repair or replacement. DELTA will not be responsible for any asserted defect which has resulted from normal wear, misuse, abuse or repair or alteration made or specifically authorized by anyone other than an authorized DELTA service facility or representative. Under no circumstances will DELTA be liable for incidental or consequential damages resulting from defective products. This warranty is DELTA ’s sole warranty and sets forth the customer’s exclusive remedy, with respect to defective products; all other warranties, express or implied, whether of merchantability, fitness for purpose, or otherwise, are expressly disclaimed by DELTA.