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DP Mortise attachment question

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Forum topic by firstbase posted 11-20-2013 01:58 AM 932 views 0 times favorited 7 replies Add to Favorites Watch
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firstbase

35 posts in 684 days


11-20-2013 01:58 AM

Despite generally negative reviews of mortise attachments for a drill press I am committed to giving it a try. So….wondering if one brand attachment is considered better than another? I have a Porter Cable 15” DP but can’t find a Porter Cable attachment made for it. Will the others such as the Delta kit fit it? How is the quality of one brand vs. another. I believe I see them made by Delta, Harbor Freight, Rikon…or are the all basically the same? Any comments appreciated!


7 replies so far

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crank49

3524 posts in 1723 days


#1 posted 11-20-2013 02:24 AM

i have the Delta kit, got it at Lowes on clearance for $44.
Could not say no at that price and I had a spare drill press to put it on.

Can’t speak for others, but the Delta has 4 different collars to attach the fixture to the quill.
To determine if it will work you have to measure your quill and see if the Delta has a collar to fit it.
In my case it did not have a collar to fit. I made my own by rolling a ring of steel banding strap to the correct size and epoxied it into the fixture’s clamping collar, slipped it onto the quill, clamped it down as tight as I could get it and then waited a couple days for the epoxy to set up. Works just fine.

-- Michael :-{| “If you tell a big enough lie and tell it frequently enough, it will be believed.” ― A H

View kdc68's profile

kdc68

2076 posts in 1029 days


#2 posted 11-20-2013 02:24 AM

I own the Porter Cable DP. I can only speak for my research of the Delta Mortising Attachment Kit and the short answer is “no.” it won’t fit our Porter Cable drill presses. The Porter Cable has a quill diameter of 47 mm. The Delta kit fits drill presses with quill diameters of 66mm, 50.9mm, 48mm, and 38mm. The kit contains bushings that will fit those quill diameters I mentioned, unfortunately 47mm isn’t one of them. I decided just to drill out my mortises with a either a brad point bit or forstner bit. Then just par down the mortises with a sharp chisel to square them up. It’s easier to do than you may think.

-- Measure "at least" twice and cut once

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firstbase

35 posts in 684 days


#3 posted 11-20-2013 03:36 AM

Thanks for the responses. The kits from Shp Fox and Woodtec both list the bushing/quill diameters that come with the kit and then say something along the lines of “Match your drill press quill diameter to the nearest ID bushing dimension” which leads me to believe that it doesn’t have to be an exact match? My PC DP would be 1.85” and the closest listed bushing for the Shop Fox is 1.88”. Do they flex or adjust a certain amount to allow close to be good enough?

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firstbase

35 posts in 684 days


#4 posted 11-20-2013 03:43 AM

How about replacing the stock quill with a new one that would fit the kit? Is that possible? Sorry for the newbie drill press questions!

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kdc68

2076 posts in 1029 days


#5 posted 11-20-2013 03:45 AM

Not sure if they flex or adjust. And I don’t think you can replace the quill, as it is sized for your drill press. But maybe crank49’s post above would solve this issue. Perhaps a shim of sorts like steel banding or something else that would give you the .03 needed….good luck

-- Measure "at least" twice and cut once

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kdc68

2076 posts in 1029 days


#6 posted 11-20-2013 03:57 AM

On the bright side you have a damn good drill press for the money IMO. I did this review about a year ago and it still holds true today

http://lumberjocks.com/reviews/3163

-- Measure "at least" twice and cut once

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firstbase

35 posts in 684 days


#7 posted 11-20-2013 05:10 AM

I hope so! The reviews I found were all really positive on it. Yours being one of those. For my uses, a garage woodworker aspiring to some Adirondack chairs, built in bookshelves and some shop cabinets to start, it should fit my needs. Now if I could just get it out of the box. I bought it on Sunday and brought it home in the back of the pickup. Before I could get it unloaded I managed to break a finger on my right hand. Now I have 150 lbs of metal in a box (sure seemed like more than that when I loaded it), a 5’ 100lb wife, a broken hand and not a neighbor in sight! Would just like to get it plugged in so I can check the run out. Beyond an issue with that I would think I’m good to go. Just trying to sort out my mortise kit options…..

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