
Product Description
Converts a drill press into an accurate mortising machine for woodworking applications. Lets you chisel accurate, professional-looking square holes easily. Includes: Installation hardware, instructions, carrying case, Mounting Type: Attachment for drill press
Product Details
- Amazon Sales Rank: #59207 in Home Improvement
- Brand: Northern Industrial
Features
- Attachment fits over drill presses with diameters of spindle sliding bush ranges of 52.5mm, 55mm,58mm and 60mm
- Comes with 4 chisels shank sizes of 1/4in., 3/8in., 1/2in. and 5/8in.
- Replacement chisels sold separately

Customer Reviews
Most helpful customer reviews
8 of 8 people found the following review helpful.
Not the best Quality
By Stephen Gilskey
The mortising attachment as a whole works well with my General Industrial drill press. However, the mortising chisels are poorly designed and cannot handle hard woods like sugar maple. The mortising chisels have what appear to be a "dome" design (instead of the traditional "cone" design) which compresses the wood and does not push it toward the auger bit when drilling. The points are soft and actually bend inward when trying to penetrate hard woods. The price is low but unfortunately the overall quality and usability is also low.
10 of 11 people found the following review helpful.
Northern Industrial Mortising Attachment review
By Edward A. Beckles
The Attachment appears to be solidly built and was easily assembled on my Ryobi DP101 drill press just from the pictures. It produced clean mortises from the first time I used it.
The Operation Manual was accurate and clearly written.
Suggestions - 1 - The attachment is supposed to be removable. A knob or lever would be preferable to the hex nut supplied to tighten the chisel holder on the quill.
2 - Metal split ring bushings instead of the plastic ones supplied. I'm nervous about tightening the nut on the chisel holder for fear of breaking the plastic bushing.
3 - Flexible leaf springs instead of the rigid curved rods supplied to hold the workpiece against the fence; the sides of the workpiece may not be smooth or parallel.
4 - Redesign the case so that each bit has its own fitted slot. My bits came in cardboard boxes squeezed in between the other parts in the case.
In summary, a good hobbyist tool which I would recommend to other woodworkers.
Edward Beckles
7 of 7 people found the following review helpful.
Incorrect Quill Size Listed on Amazon
By Michael Griswold
I have a jet drill press with a really large quill (75mm) and was having problems finding a mortisising attachment that would fit my press.
Amazon had incorrectly listed two quill sizes for this mortising attachment that is NOT supported - 66mm and 75mm.
I ordered this product, only to find out that it would not fit my press, so I sold it to a freind of mine, who seems to be really pleased with it...
For reference, here is the descirption from the manufacturer:
* Attachment fits over drill presses with diameters of spindle sliding bush ranges of 52.5mm, 55mm,58mm and 60mm
* Durable cast iron with built-in chisel housing
* Accepts up to 5/8in. (1.6cm) shank chisels (not included)
* Comes with 4 chisels shank sizes of 3/16 in, 9/32in, 3/8in, 1/2 in.
* Replacement chisels sold separately
* Also includes installation hardware, instructions and plastic carrying case
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