Converting a Drill Press Into a Milling Machine

Mills are a huge investment, and for hobbyists without the space to install their own personal mill, it can sometimes be a pain to have to find a facility with a mill to complete your project.

What if you could convert your drill press into a mill instead? YouTuber [Small Metalworking Machines] explores this in his video, where he takes a small Central Machinery drill press and adds a few mods. He took some steps to improve the quill, spindle, and bearings — boring down the quill, replacing the bearings, and finally turning and re-threading the spindle it at 1/2-20.

With the adjustments, he was able to add in a cheap drill chuck, which fit in quite nicely with just a slight wobble of 5 thousandths on either side. To introduce some control, he added in a worm gear to engage a gear on the spindle. A pivot point disengages the worm gear, while bearings provide it controlled movement from the worm wheel.

He also added a cheap milling table from eBay, attached to the base of the drill press, all for a total of $120. While it’s not perfect, it’s still significantly less expensive than buying a mill!

[Thanks to jafinch78 for the tip!]

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