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In this video I dismantled our workbench pillar drill and added a quill stop.  The quill is the part of the drill with moved downwards, and higher end machines always have a stop, which allows the plunge to be held at various heights to help centre holes or for other uses.  This pillar drill was quite cheap and is probably the most commonly available hobbyist machine in terms of size.  The steps are very simple in taking the machine apart but I chose to drill and tap the front where the metal was not cylindrical like the quill.  When you drill metal you always have break out, and you want to avoid any metal hitting the quill when you replace it.  At the end of the video you can see me using the quill stop to lower the homemade drum sander (http://youtu.be/fLDNL8w940I)into a sacrificial bed with a circle cut out.
I get my 10" harbor freight drill press delivered in 2 days. It has a depth stop but not a quill lock. This method should work perfect for it! Thanks!
<p>Hello!</p><p>It's a great idea!</p><p>Perhaps the insertion of a small ball at the tip of the clamping screw can prevent unwanted marks on the mandrel piston.</p>
<p>hmm ok.... well the tab sticking out on the left side of the quill - the one with the hole? that's where the moving depth stop, used when you are drilling, normally goes. Usually attached to the drill chuck guard that seems to be missing on your machine. For a locking depth stop - you know that small grub screw with a locking nut on the right side in front of the handles? That's the locking depth stop - it's not meant to be used often as it puts strain on the return spring mechanism - that's why you have a MOVING small platter that goes up and down..... just saying.</p>
<p>Nice Job</p>
<p>Good Instructable. A quill lock is very handy for many drill <br>press tasks, and you're right, they are only found on more expensive machines. I <br>would like to point out however, you already have 90% of one already <br>incorporated into the press; you removed what is the quill guide screw on the <br>right side, held in place with a jam nut. This is dog- pointed to ride in the <br>channel of the quill to keep it from rotating. It can also serve the same <br>function as a lock by simply backing off the jam nut and turning it in to hold <br>the quill in the desired position. If used frequently, I would make a custom <br>one with an extended shaft and simply put a roll pin in the end to act as a thumb <br>knob. I have a 1950's Dumore benchtop press that has this very feature and is <br>simple enough yet effective. </p>
Very good work.Two days ago I bought a drill table much like this, but it has a depth stop (can't upload an image). The depth stop goes into the holed flange at left of the drill axis.
Yes I know the sort you are referring too. They work well enough but there is something reassuring about being able to tighten the quill down this way.

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