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mag drill on drill press pedestal?

ching0n

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I've been meaning to pick up a larger drill press but been wanting a mag drill for a while too. I figured one could mount a mag drill on an old drill press as shown below. The advantage here that the mag drill has a spindle/quill that can handle side loads and would keep the chuck from falling off if I wanted to do some light milling. w/an xy table. Anyone tried it and/or see any issue w/this? I'd probably pick up one that has a rack for z axis control and fix the table w/a slide column to the bottom plate to avoid rotation on the column.

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shawhite

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My first question would be do you think the magnet base can withstand side load? What material do you envision milling? What are you using to hold your endmill? Magdrills are perfect for drilling holes is metal you normally couldn’t get to a drill press. They also have a very limited depth of cut along with limited speed options which will greatly limit the material you can work with when milling. Also by the time you buy a decent mag drill cobble together this table and add an x/y table you could have bought a legit mill. Maybe not the best mill but it would still be better than anything you are attempting to build. With milling machines rigidity is your friend and you setup has zero rigidity.
 

Retired dozer fixer

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For the money you’re spending on a good mag drill I’m pretty sure you can get a decent drill press unless it’s the mag drill your after and want to make it more usable
 

dr_clyde

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No milling with drill presses. No. Just don't even try. It's not going to end well. You will break tools, damage your part, or potentially hurt yourself. Drill presses are not mills.

I don't understand the temptation to try to mill with a drill press, a mag drill is even worse! This just shows a fundamental misunderstanding of milling and how the forces affect the cutter, the work and the machine.

If you need to do a milling operation, use a milling machine.
 

GeoBruin

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A mag drill on a drill press stand is a great idea. But not for milling.
 
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ching0n

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My first question would be do you think the magnet base can withstand side load? What material do you envision milling? What are you using to hold your endmill? Magdrills are perfect for drilling holes is metal you normally couldn’t get to a drill press. They also have a very limited depth of cut along with limited speed options which will greatly limit the material you can work with when milling. Also by the time you buy a decent mag drill cobble together this table and add an x/y table you could have bought a legit mill. Maybe not the best mill but it would still be better than anything you are attempting to build. With milling machines rigidity is your friend and you setup has zero rigidity.
Mostly light duty work on plastics, aluminum, copper, slowly on mild steel. Stuff I do occasionally on a drill press at the moment. The depth of cut limitation is why I'm thinking drill press base w/z rack and mag drill because you can just take it off and use it as a mag drill. As to the sideload....I suppose magnets have less shear holding than axially (unlike adhesives) tho you can easily counter that by making the magnet base a tight fit to keep it from sliding. They do make slotting mag drills (pictured). Good point on the RPMs tho I'm looking at one w/some range adjustment. 500$ ball park w/the setup I'm envisioning (chicom mag drill + used press off FB). I understand about the stiffness though that typically comes w/a weight penalty.

Oh, as for tooling....they make these in Morse, weldon, and nitto kohki shanks as far as I can tell. I'd probably choose weldon as I'd have falling bits w/morse and find nothing for nitto.

For the money you’re spending on a good mag drill I’m pretty sure you can get a decent drill press unless it’s the mag drill your after and want to make it more usable
There's good and then there's good enough. My Wen press has been fine as have my cordless so might give a chicom drill a try. And yes, dual purpose is mostly why I want to use the mag drill tho the spindle/quills appear beefier if I want to do milling.

I don't understand the temptation to try to mill with a drill press, a mag drill is even worse!
well.....price, bulk, heft. A drill press gets more use (by me) so space as well. Arguably mills are more of a pain to setup for drilling tho don't suspect that would change much in my scenario.

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dr_clyde

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So, just to be clear, you asked our opinions on using a mag drill as a milling machine, was told it was a bad idea, didn't like that answer and have decided to ignore us? Why ask if you already know what you want to do?

Its your money, you do whatever you like. I believe the expression goes "**** around and find out".
 

shawhite

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So, just to be clear, you asked our opinions on using a mag drill as a milling machine, was told it was a bad idea, didn't like that answer and have decided to ignore us? Why ask if you already know what you want to do?

Its your money, you do whatever you like. I believe the expression goes "**** around and find out".
Or play stupid games win stupid prizes. There is probably a reason the big names in mag drills hougen/fein/Milwaukee don’t have this type of contraption. I say do what makes you happy just be careful as if it goes wrong it will happen quick and hopefully you don’t get hurt in the process. Where I am a used mill drills come up cheap time to time on marketplace and Craigslist might want to go that route.
 

Steve_P

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As said, a magnetic drill's magnet is designed to resist motion against axial loads. Not side loads. This should not be difficult to accept, but you don't seem to want to. For sure it will take some side load, I'm sure it will hold up to UHMW if you go slow with shallow cuts, but overall this is just not a good idea.
 
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ching0n

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So, just to be clear, you asked our opinions on using a mag drill as a milling machine, was told it was a bad idea, didn't like that answer and have decided to ignore us? Why ask if you already know what you want to do?

Its your money, you do whatever you like. I believe the expression goes "**** around and find out".
And here I thought I was being polite in just answering your question(s). I'll learn from that mistake.

As said, a magnetic drill's magnet is designed to resist motion against axial loads. Not side loads. This should not be difficult to accept, but you don't seem to want to. For sure it will take some side load, I'm sure it will hold up to UHMW if you go slow with shallow cuts, but overall this is just not a good idea.
It's not, as it shouldn't be difficult to accept that one may simply counter "side loads" (shear load in engineering parlance) w/a tight fence around the drill no? Maybe I'll look into what makes the slotting mag drill tick as opposed to just a regular mag drill. I'm just doing what's in the video below but moving the axis table to the work bench instead of having it between the drill and the magnet:

 
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