Message to Our Customers


Model # 14-651

Internet # 203026196

3/8 in. Bench Top Mortising Machine

This item has been discontinued.
The Home Depot no longer carries this specific product.

$329.99 /box



Model # 14-651

Internet # 203026196

Accurate, easy to setup and operate, the Delta 3/8 in. Bench Top Mortising Machine is designed for the professional user. Including a multi-position hand lever and rotating mortising head for off-table projects, this machine also has adjustable height for added versatility. Powered by a 1/2 hp, 120-volt, 60 hz single-phase induction motor, this machine produces smooth-sided, burn-feed results. Built to handle your toughest jobs, the heavy-duty cast-iron base with center through hole ensures stability, while an adjustable stop makes repeat mortises easier.

  • Easy and open access to drill chuck for quick bit changing
  • Large cast-iron base with center through hole for strength and stability
  • Adjustable rack and pinion fence and rack and pinion head raising and lowering
  • Mortising head column can be turned 180 degrees and remounted for off-table mortising
  • Includes: One Mortiser, 3/8 in. Capacity Chuck and Key, Four Mortising Chisels and Bits, Tool and Chisel Holder and Riser Block
  • 5-year warranty on parts and labor
  • Home Depot Protection Plan:

    Home Depot Protection Plan

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents. Download a free copy from the Adobe Web site.


Base Length (in.) 
Base Width (in.) 
Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
Amperage (amps) 
Bench & Stationary Tool Type 
Bench or Stationary 
Built-In Light 
Chuck Size 
3/8 In. 
Color Family 
Cord Length (ft.) 
Horsepower (hp) 
.5 hp 
Maximum Speed (rpm) 
Minimum speed (rpm) 
Power Tool Product Type 
Bench & Stationary 
Product Weight (lb.) 
74 lb 
Tools Product Type 
Power Tool 
Voltage (volts) 
Warranty / Certifications
Certifications and Listings 
CSA Listed 
Manufacturer Warranty 
5 Year Parts and Labor 


Rated 3.8 out of 5 by 10 reviewers.
Rated 1.0 out of 5.0 by Extremely disappointed, housing was broken I selected the Delta over the Jet based on reviews and maybe a little on the cost. The package came and the box looked as though it had been properly handled. when I opened the box, everything seemed to be in one plastic bag. The box was so heavy I decided to unload the box piecemeal and carry to the basement for assembly. I picked up the housing and noticed the back was broken off. The package was shipped directly from Delta, and it looked to me as though the sent me an item that had been returned and not checked. I bought the Jet. June 16, 2015
Rated 4.0 out of 5.0 by Good product My husband purchased this tool for his workshop. He likes the mortise machine. April 14, 2015
Rated 5.0 out of 5.0 by This is a great investment for someone wanting to perform repeated quality mortising This unit is solid, and extremely heavy. However, interestingly, it requires being secured to a work surface to perform safely on larger pieces of wood; the weight of the wood and tension from the machine can lead to awkward tilting during operation. The "shelf" on the rear of the machine seems misplaced, but it does not hinder operation. A better holder for the chuck key would have been a minor, yet very helpful improvement in overall engineering. The only complaint I have about the machine is the depth stopping mechanism; it tends to slip and does not connect squarely with the main column, which can lead to varying depth over time. Like me, you may need to really, really secure the depth stopper to have it work flawlessly. Also, the stopper itself needs to be secured in alignment with the holding screw properly; the flat face of the stopper should be aligned with the holding screw, else it may rotate and shift. I do not understand the way the stopper was designed for this device; the bent part of the non-square stopper contacts the top of the column, instead of the base of the device as one would expect. Overall, this machine is an incredible workhorse, and a great value for the price. I wonder about availability of chisel and bit replacement, but the included tools are very well performing. The motor has a tendency to buckle when being fed to quickly into a workpiece; stopping the unit and turning the chuck by hand seems to clear it up easily, but I am curious about why this is so often necessary for such a powerful motor. I would recommend this machine to anyone serious enough about quality mortises to consider purchase. A drill press bit cannot compare to the overall operation and performance of this superior piece of equipment. October 30, 2012
Rated 5.0 out of 5.0 by Heads above other cheaper machines of the same type. Mortise and tenion work requires accuracy and this machine deliveres. I admit that I have done M&T work by hand before and it is really a choir to make it come out in an acceptable manner. I reviewed other machines and and this machine was the recommended model. Have never regretted its purchase and it is certainly accurate and easy to use. September 26, 2012
Rated 4.0 out of 5.0 by Great value Overall, a good product. I replaced my old one with a new one but found the new depth stop rod would not fit into the badly machined hole. I ground the rod down to fit nicely now. The work piece hold down seems to be of less material than the old one so I just swapped them and use the more substantial one. The 1/2 inch hollow chisel seemed to be not quite as sharp as my old one. Requires more pressure and has a little more tear out (even with a scrap piece under the work piece) than my old chisels. I find the 3/8 chisel works fine. This is the one I use most for mortise and tenons. Works great. Overall, this is still a great machine and I'd buy another if I needed. Has nice, large work base area. March 11, 2014
Rated 5.0 out of 5.0 by great mortiser for the home workshop Very useful tool for the home woodworker to make mortise and tenon furniture. Fence takes a bit of time to adjust accurately, but improves as the user gets more used to using it. Great mortiser for the beginner-intermediate. February 19, 2013
Rated 5.0 out of 5.0 by This product is so efficient. I was apprehensive purchasing this machine because of lack of experience on my part. But this mortising tool is so good I will probably make so many more mortise and tenon joints. I am anxious to see how long this mortising tool will last. October 16, 2012
Rated 2.0 out of 5.0 by not impressed Machine sets up fairly easily, but mine needed some extra attention with the mating surfaces that the head slides up and down on. They still don't line up exactly but it will suffice, almost no play now anyway. The post that the work piece holddown slides on is very rough and has to be pulled up on evenly to get it to move. In spite of what the instructions say, you will need an additional hex wrench for assembly. The lever that moves the head assembly only goes into position 2 ways. One position is too far back and the other is too far forward, making it awkward to operate. This is my first mortising machine but I certainly would have to think that other cheaper brands would be better than this one. Rather disappointed, Delta used to be an excellent brand. March 18, 2014
  • 2015-07-05T17:14:00.471-05:00
  • bvseo_lps, prod_bvrr, vn_prr_5.6
  • cp-1, bvpage1
  • co_hasreviews, tv_10, tr_10
  • loc_en_US, sid_203026196, prod, sort_default
2 >>


Standard Shipping includes delivery by small parcel service. Processing time varies by product.

If product is eligible for shipping to AK, HI and US Territories additional transit time and remote surcharges may apply.