I finally got around to trying out my new mortising attachment for my new
delta drill press. Contrary to some of the posts I read in this ng, it is
awesome. It is a breeze to set up and not difficult to square (square
enough) to the fence. The attachment (model 17-924) says on the box that it
is a "New Improved Design". I had to raise the depth stop on my drill press
up on the shaft in order to accept the collar for the attachment. I lose
about a 3/4" in quill travel, but I can always lower the depth stop back
down after removing the mortise attachment.
It came with 4 mortising chisels (1/4", 5/16", 3/8" and 1/2"). The
attachment goes onto the drill press without using ANY wrenches or tool of
any kind. Quick and easy. The only thing that was somewhat of a pain to
put on was the fence, but I plan on leaving this on when using the drill
(unless it gets in the way).
I tried the 1/4" chisel to mortise some red oak and it went through like
melted butter. Squaring the chisel to the fence, which can be a problem as
some posters have stated, but I think I have found a method that gets the
chisel "square enough" After all it doesn't have to look pretty, because
the mortise his hidden behind a tenon.
**** (four stars)
I have one, but even *I* wouldn't call it awesome. Try that 1/2"
chisel in some hard maple. You'll break the levers off the press
pulling on it. <g> I use it mostly on pine, poplar and other soft
woods. My biggest complaint is the setup time. Switching between
drill press mode and morticer is time consuming. I use both tools
concurrently, and everything has a price - in this case, convenience.
No tools needed, other than possibly one to loosen the drill press
quill stop clamp when first setting it up. I don't have the model
number handy, but it's about a year old. All thumbscrew assembly.
My drill press has diagonal hold-down slots instead of parallel slots,
so the fence is a bit of a PITA to setup. Also, drill presses are not
designed to exert the pressure needed to cut into hard wood.
But it does work, even though it does require some manual clean-up
with a chisel, and is certainly cheaper that a $275 dedicated
I like how it worked with the 1/4" chisel in red oak, but like you said I
may be in for a surprise when I put in a 1/2" chisel and try to plunge
through some maple.
(snip)> My drill press has diagonal hold-down slots instead of parallel
Mine has the diagonal slots also, HUGE pain in the arse! I'm not sure why
they use diagonal slots. I think the Delta engineers were puffing on
something silly when they designed the diagonal slots.
I guess (hope) it will work for my needs for now until I can afford a
Oh and Happy New Year. (yeah, thats right I'm not out partying, I'm a nerd)
<Greg G.> wrote in message
Most of the stock I use is 3/4" which lets me get a way with using 1/4"
tenons for most projects.
I will be making 1/4" mortises most of the time. Like I posted earlier, in
red oak the 1/4" 'er went in and out of the red oak like bud da. :)
I would rather use this attachment than the router table which I have been
using thus far.
I found the tool easy to take on and off (with the exception of the fence).
My attitude toward this purchase could change when I try to mortise through
a harder wood, but cant you just take smaller nibbles?? I'm guessing that
if you are experiencing a lot of resistance with a bigger chisel or harder
wood that you could just use only a portion of the chisel with each plunge.
Granted, this will take longer. I don't know though, I have not tried that,
nor have I tried it on anything but red oak.
I wouldn't go as far as to call it worthless.
I wouldn't call it useless IF you are doing 1/4" tenons in oak, either.
However, since a tool should (IMHO) work under a variety of conditions,
having a limitation as to the wood species that it will work with makes
it worthy of the "NEXT to worthless" appellation I ascribed to it. If
my TS couldn't cut maple well, I'd be calling it "next to worthless"
i have a stand-alone bench-top Delta mortiser. i was just using it
this week to cut some 1/4" mortises in walnut. it worked like cutting
butter. previously i had used it to cut some 1/2" wide mortises in
oak for a cabinet i built. it was a BIG PAIN IN THE ARSE! i came to
the conclusion that anything short of a 1000+ lb. mortising machine is
not very practical unless you are only making a few small mortises. i
am sure your drill press attachment will work fine for smaller
projects and an occasional large one, but if you plan on making 1/2"
mortises with any regularity, you will not be happy. when i need to
make large mortises anymore, i just grab the chisels.
don't take this as a negative reply, as the drill press attachment
works just as it was designed. it is not meant for high volume or
Let me just ad that I have seen very FEW reviews were the reviewer took the
tool in question through "all the capabilities of the device under test"
I found your initial response to be sarcastic, however I could be mistaken.
I used the tool with the 1/4" chisel and it exceeded my expectations based
on what I have read in this ng. I was excited with its performance and
posted my findings in a review. I am not a professional woodworker or
reviewer. If I had based my decision on whether to buy this tool from what
I have read in this ng, I would not own a mortise attachment right now. The
purpose of the review was to give those 'sitting on the fence' about the
tool, the courage to try it.
I am happy with my decision to buy the tool, like I said in a previous post,
I will be using the 1/4" chisel ,most of the time.
This will be my last review of any kind.
Aw, nuts to them. I found your writeup useful. I don't have budget or room
for a dedicated machine but if I had a bunch of 1/4" mortises to make I
would consider the DP attachment.
I recall lots of published reviews where the author states s/he has used
only a subset of the features. This is especially true of reviews of
computer programming tools. A comprehensive review of Microsoft's Visual
Stuido.NET would be hundreds of pages long.
I suspect that I'm not alone when I say that I don't like to spend money to
"try" tools. I want to know that when I buy something it is going to be
robust and serve my needs, else I have to go out and buy (or "try") a
replacement. I want to know what a tool does well, and even more
importantly what its shortcomings are.
That's fine, but many people would be (and are) very disappointed when they
discover that the larger chisels are nearly useless.
You're taking the questions and feedback the wrong way if they are what led
you to that...
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