Model # 17-924

Internet #203026212

Delta Mortising Kit


Mortising Kit

  • Creates square-shouldered mortises with a drill press
  • Includes guides, bushings, fence and 4 bits
  • Operates optimally at 1000-1500 RPM
$13900 /each
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Frequently Bought Together

Product Overview

Cut square-shouldered mortises with your drill press using this Mortising Kit from Delta. It includes four commonly sized, hollow, square chisel bits with embedded augers that descend into a workpiece for perfectly squared recesses. Bushings, guides and a fence make setup a breeze, forming an inexpensive apparatus for mortising with a 4 in. capacity under hold-down and 2-3/4 in. capacity from ends of clamp rods to fence.

  • Fits drill presses with 38 mm, 48 mm, 50.8 mm and 66 mm quill diameters, including Delta models 11-090, 11-980, 11-990, 14-040, 14-070, 17-900, 17-925 and 17-965
  • Square chisel/auger bit sizes include 1/4 in., 5/16 in., 3/8 in. and 1/2 in.
  • Large 4 in. capacity under hold-down and 2-3/4 in. capacity from ends of clamp rods to fence
  • Includes handy carrying case that holds everything for easy storage
  • Attaches to drill press in minutes without the need for installation tools



Product Depth (in.)
Product Height (in.)
Product Width (in.)


Bench & Stationary Tool Type
Color Family
Product Weight (lb.)
Tools Product Type
Power Tool

Warranty / Certifications

Manufacturer Warranty
2 Year Warranty

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Customer Questions & Answers

Does this purchase include the chisels and bits also?

Asked by: Anonymous
Yes! It comes with 1/4 in., 5/16 in., 3/8 in. and 1/2 in. mortising chisels and bits. Same as the set Home Depot sells for $69.
Answered by: Harlan
Date published: 2016-12-01

Will it fit my ryobi with a quill dia. of 2.25?

Asked by: KW54
Hello KW54, The kit is only compatible with drill presses with specific quill diameters. Those being quill diameters of 66mm, 50.8mm, 48mm and 38mm. Looking at Ryobi's site I found only one drill press, model DP102L. I contacted the manufacturer with the specs of this Ryobi press and was informed they were incompatible. Only presses with the specific quill diameters will work. I hope this helps. Cheers, Chris
Answered by: ChrisFixit
Date published: 2015-11-07

Where is the list of compatable drill presses? I have a Ridgid, will this kit fit/work for me?

Asked by: corbinc4
Hi Corbinc4, if you have a RIDGID model DP1550 drill press, the Delta Mortising kit will work. The Delta Mortising Kit fits a 66 MM Quill diameter. The RIDGID model DP1550 drill press has a 66MM Quill diameter.
Answered by: Anonymous
Date published: 2016-10-13

Will the Delta Mortising Kit Model # 17-924 fit a PorterCable Drill Press Model # PCB660DP that has a quill diameter of 1.85 or 47mm.

Asked by: Anonymous
Hi Dwilliams127, Thank you for your question. We recommend that you do contact the manufacturer on this ,at their Technical Support Centre hotline # at :1-877-832-4301. They will be able to assist you better on this.
Answered by: Sushma
Date published: 2015-11-04
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Customer Reviews

Mortising Kit is rated 3.4 out of 5 by 8.
Rated 4 out of 5 by from I have used this product on two projects so far--each of which utilized multiple mortise-and-teno... I have used this product on two projects so far--each of which utilized multiple mortise-and-tenon joints. The product worked well. My expectations were met.
Date published: 2017-02-08
Rated 4 out of 5 by from I bought this mortising jig to go along with a new Wen 12" variable speed drill press I recently ... I bought this mortising jig to go along with a new Wen 12" variable speed drill press I recently purchased. As with most after-market accessories, it took some studying, a call to Wen and Delta, and a bit of modification to get the jig hooked up properly to the drill press. Once done, however, it works great. No more awkward and time consuming setup cutting mortises with a router. I'm fully satisfied with this product, and would give five stars were it not for the tweaks I had to make to attach it. As for the modification, I offer what I had to do in case anyone else runs into this: First, you need to use a screw driver to remove the depth stop from the quill (no big deal there). Next, the jig comes with a number of split-ring and half-ring spacers to size the jig's attachment collar to the drill press quill. For the Wen, the three split-ring nesting spacers were perfectly sized for its quill, but the inner one is smaller than the chuck's diameter, so I had to knock the chuck out to attach and detach the jig -- not what I wanted at all. I used a hacksaw to cut the inner split-ring spacer in half, filed it smooth, so now I can slip the collar over the chuck, insert in the now half-ring inner spacer, and tighten the collar. No taking the chuck on and off -- this makes attachment quick and easy. The foregoing "jury-rigging" is the only reason for the 4 star rating. I'm not sure why Delta didn't make all of the quill spacers half-ring -- it would surely simplify things.
Date published: 2016-12-01
Rated 4 out of 5 by from Mortise chisel works great - used it on red oak. I was able to mount the mortise chisel assembly to my drill press with no problems. The chisel & assembly are very sturdy and worked well in cutting 3/8" mortises in red oak. I could not utilize the fence, however. It took up too much space on the drill press-such that I could not go far enough into the work piece.
Date published: 2013-12-11
Rated 2 out of 5 by from Poor Workmanship None of the rings fit my Craftsman drill press. The set screw hole for the hold down foot was drilled way off center and the foot is way out of position when it is tightened. Another set screw hole was also drilled off center. As yet I have not been able to use it.
Date published: 2013-08-21
Rated 5 out of 5 by from Excellent tool It drills square holes and with a cross slide vise it cuts perfect mortises. I used it to build my kitchen cabinets out of pecan wood that had air cured for 17 years. That was the hardest wood I've ever seen and the bitts cut it like it was balsa. This is the second set I have owned. The first set is in my shed somewhere, and I couldn't find it. I couldn't stand trying to make mortice and tenon joints with out one so now I have two.
Date published: 2012-04-10
Rated 4 out of 5 by from Nice mortices, but I am limited. After a lengthy set up on my Delta Bench Drill Press, I realized that the widest style i could mortice was 2' which just mdae it for the first set of 4 shutters I built. Will need to get a bigger press. lol
Date published: 2012-09-25
Rated 3 out of 5 by from I made it work I had to modify the jig for it to work on my drill press. My drill press does not have a wide collar to clamp onto just 1/2 in collar. I tried all of the spacers but could not clamp down enough to hold it tight. I tapped holes for screws so I could use the jig. Once I got it center it worked great for me. It comes in a very nice case.
Date published: 2015-08-04
Rated 1 out of 5 by from Product didn't work on Delta DP worked for two hours to properly set up and the results were very disappointing. the good thing is a reasonable store manager allowed me to return it for store credit allowing me to spend my $$ more wisely on items of value at the store.
Date published: 2013-02-12
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