Grizzly   |  Model: H7789
Mortising Attachment Kit
Price: $94.95
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Grizzly H7789 - Mortising Attachment Kit

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    This Mortising Attachment Kit, with its variety of interchangeable bushings, will fit just about any drill press for boring precision mortises. The entire kit includes cast iron chisel holder and fence, hold down assembly, quill alignment pin, 1/4", 5/16", 3/8" and 1/2" chisels, 3 two-piece bushings, 3 split bushings and carrying case. Just match your drill press quill diameter to the nearest ID bushing dimension. Not recommended for use with "baby" drill presses.

    Bushing sizes include: 2.945" O.D. x 2.600" I.D., 2.600" O.D. x 2.366" I.D, 2.366" O.D. x 2.170" I.D., 2.600" O.D. x 2.000" I.D., 2.600" O.D. x 1.880" I.D. and 2.600" O.D. x 1.570" I.D.

    Works with the following drill presses:

    • Grizzly G0485
    • Grizzly G0491
    • Grizzly G0794
    • Grizzly G7943
    • Grizzly G7944
    • Grizzly G7947 (with additional purchase of G9716 quill collar)
    • Grizzly G7948 (with additional purchase of G9716 quill collar)
    • Shop Fox W1680
    • Sears 21313
    • Sears 21315
    • Sears 21317
    • Delta 11-990
    • Delta 14-070
    • Delta 17-900
    • Delta 11-090
    • Jet JDP-14MF
    • Jet JDP-17M
    • Jet JDP-17MF
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    10 Customer Reviews (4.9 out of 5 stars): Sign in to write a review

    Worked great on my first project! 11/9/2017

    Bought this to make mortise joints on a bed project and it worked great! Bed is already being used by our son.

    limited 9/29/2017

    This product does not fit "just about any drill press" as stated. Do not buy this unless you have one of the drill presses listed.

    Mortised child's bank 8/23/2017

    With limited instructions it was. Easy to install and use. Not a lot of time wasted putting it on and off drill press. Instruction were better than others but was lacking. I have a jet which it handles but nothing written that made it easy. Overall works great

    Phillip H

    I bought this about 2 month ago and have used it twice and the product works great. I took a few tries to get it setup the first time, but after I figured it out it work great. It is imporant to keep the tip of the drill bit oiled so it does not over heat.


    This mortising attachment kit did the job I had to do but I have to say it is a low quality version of what it can be.
    Certainly not the best.

    Leon S
    Mortising jig 6/1/2017

    I've been very happy with the unit overall, but I am having a great deal of difficulty with the 3/4" drill and/or mortising bit. They seem to overheat, no matter how often I withdraw and reinsert the drill.. The smaller bits presented no such problem.

    Chris M
    Drill press is awesome and very well made 5/4/2017

    Bought this a month ago and have loved drilling and using the mortis attachment. Great product.

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