Drill Doctor DD750X Electric Drill Bit Sharpener, 3/32-3/4" High-Speed, Portable - Steel, Masonry, Carbide, Cobalt, Tin-Coated Bits, Adjustable Angles

Sharpening a drill bit has never been faster, easier, or more balls on accurate. I actually owned a Drill Doctor before this one — it was stolen during a home remodel — and the DD740X impressed me enough that I bought it a second time without hesitation. The results speak for themselves. Resharpening worn bits saves serious money over constantly buying replacements, and at this quality level, the machine pays for itself quickly.

So I've been trying to get through my extensive collection of bits and I have put this thing to the test for a few weeks now constantly going through starting with my larger bits. Started with the 3/4 because that's the largest it will except in the holder jig, and also made sure to have the additional 100grt wheel for the larger ones and after the first few days I decided to make a change and bounce down and work on the small sizes and man I had a lot more than I thought. They have gone much easier and quickly and not having a single issue. Zoomed through several hundred bits now and I am amazed at the condition of the Wheels, both the original 180 and the 100 i purchased appear as though I haven't even used them. Quality of the wheels obviously are great. Power of the motor can be tested on those big heavy bits and they are some very hard material. But I guess I have to share the few things I don't necessarily like, or thing's I believe could be a little better, especially since they have been manufacturing these for some time now and I think they have been content with what they have and decided to leave them alone, because I'm not seeing any real upgrades since the first model came out, possibly the overall power of the motor and I guess that's what I was actually most concerned about, but I can tell you there's no worries there. But small things from the design and fit of the little tray on the bottom you use for access to change or clean up the wheel. It's a poor fit, and from difficult to get open to also allowing way more of the metal dust it throws out the bottom and the sides. To the removable access to the side view you use for splitting the tip of a bit if you choose to go that route, which also blows constant dust out of the opening when you're not using it, but this is probably my biggest complaint about the entire thing. If you want to split the tips you need to do more than just jump from the normal sharpening process and like you have seen in videos where they sharpen a bit and take it directly to the side access to split it, but it's not properly lined up, it's not exactly a precision machine, and for straight up sharpening needs it functions for me just fine. I have to spend a lot of time with each bit if I'm splitting it from the holding jig i have to manually tweak the depth of the bit using nothing but visually putting it in and out of the side access and adjust it until you are not going to hit the Sharp edge of the bit and not go too far to the back of the edge and take chunks out of the bit leaving lots of burrs on them to clear up. I think it could certainly benefit from some possible upgrades to the adjustments and the slides that you adjust to go from 118 to 135 degrees is in need of some improvement, it can be really hard to move even after you loosen up the screw in the middle of your trying to get it changed. It hangs up somewhere and I can't see where. I think compared to the much more expensive machines that I would take this one every time, but I wish they would work on the fine tuning stuff, and simplify the overall design making it look like and function more like something you would put on your bench and leave on your bench and help keep your bit collection nice and sharp and not in the bag it comes with, and tucked away in a drawer somewhere and it gets pulled out once a year and you are not going to enjoy it as much, I would probably have zero complaints if it wasn't for the amount of bits I'm having to get through because I have procrastinated and I would like to have it benchtop constantly touching up my bits before I return them. This has been around long enough for it to be a little further refined and less moving it around to make adjustment, and constantly turning it from one side to the other, and make it more like a permanent piece for the shop and less like a portable sharpening device to take with you. It just needs someone to look at it and imagine it will be sitting in the shop for continuous access and easy to keep caught up. This is a good test for this thing, but still have to admit that it doesn't fail any tests, and I don't regret my purchase, but it was a tuff decision for me because I have so many bits that I use and have so much invested, I was serious about to purchase a machine for more than a thousand dollars and I don't think I would be unhappy with that. But I've been looking at these for some time and I thought it was a good idea to get this one for the value, and I could have passed it over to my son in his own shop if I could see a reason to spend that much more money, and I have to be honest, I think I made a great choice and I would recommend it to anyone.

First, I must admit that where I used to work, we had a $4000 Darex professional drill sharpener and did hundreds of bits a month. It always gave excellent results. What Darex has done with their "home" products (Drill Doctor line) is remove many of the finer adjustments and use a plastic chuck. The biggest weakness in the DD is the lack of an angle adjustment on the split point relief fingers. This is found on the Darex pro models. The DD model uses sheet metal fingers to set rotational "clocking" of the bit, but if you are setting up a drill that has had relief cut in it from a prior sharpening on the same unit, the fingers drop into the relief zone, not the drill flutes as intended, causing the drill to be slightly rotated from optimum when tightening the chuck. It does not significantly impact the primary grinding, but it can and will cause the split point grinding to not have the correct point in the web center. The Darex allows a 4 degree +/- adjustment to compensate for this, the DD does not. I found that I have to eyeball the clocking to compensate for the rotational error caused by the reliefs. If you have inaccurate split point geometry, the drill does not like to penetrate steel material without a pilot hole. Other than that, I found it does a decent job as a home drill sharpener. One other point, mine arrived in a paper box, not in a plastic case, although they did provide a canvas storage bag.

Saludos. Por el momento solo he podido afilar unas cuantas brocas, pero si se nota que el producto es bueno. Gracias.

Appreciated for the product, its really useful.

L'ffilapunte è arrivato nei tempi prescritti, mi sono letto le istruzioni in Italiano fino all'esaurimento un mese prima circa, ho visto i video relativi da yutub tutti i giorni, mi mancava soltanto l'ffilapunte. Dopo la consegna del pacco ho provato l'affilapunte nella maniera più difficile da capire per me , ho affilato una punta da 2,5. ci sono riuscito con attenzione ricordandomi quello che avevo letto, affilatura perfetta, sono soddisfattissimo e lo consiglio a tutti.

一般的な118°ビットとスナップオンサンダービット135°のスプリットまで出来る物を探してこれ買いました。これで決まりすべて解決。説明書は英語で解らないので皆さん言う通り、ユーチューブ見てください。

Easy to use