It does not take long and is not hard, although you do need to be a little careful when reassembling the chuck. I’m a machinist with 50+ years in the trade so I know a little bit about drill bits and how to sharpen them. The main difference is that the 750X and 750 come with an extra chuck that allows you to sharpen bits up to .

A 3-Year Warranty protects every Drill Doctor bit sharpener against defects due to workmanship or design; abrasives excluded. To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Our huge selection allows you to complete your metalworking projects, or care for your tools, with the methods that best suit you.

It has been my experience that on the smaller bits (less than 1/8″) you have to pay particular attention to the orientation of the bit in the chuck. Listening to them make excuses, I was getting really mad becasue on the box, on their internet site and in the user's manual it says the tool produces split points. If you have a burnt up, chipped up bit with the lips ground unequal and one heel dragging, the Dr can't help you. Not much better than I can do by hand with either a belt grinder or a die grinder with a thin cut-off wheel mounted in it.

Es un buen equipo, si afila las brocas y las afila muy bien, me rescato muchísimas brocas que ya no servían, en lo que respecta a calidad, precio y servicio la verdad es una muy buena compra. When I need to dig for a fresh one, I take an evening when my legs hurt too bad to do anything else, and sit down to bring them all back, points all facing forward again. I vented my frustration on them about not really telling the truth and they told me they were in the process of changing the user manual to explain that.

A second lever with three positions sets the relief angle for masonry drills, twist drills or for “extra relief. Had to make a few short ones to get the right angle drill into tight places and it beats trying to stick drill flutes into the chuck jaws. But as I mentioned earlier, only the 750x and 700 come with an extra chuck that allows them to sharpen drills up to 3/4-inch. The motions you make to move from aligning the bit to sharpening to splitting flow very fluidly (if you are right-handed). Engineered for Versatility and Flexibility The same chuck can be used to sharpen bits of all sizes, from 3/32- to 3/4-inch, whether they are English, metric, or letter gauge bits.