Extend the life of your drill bits with the General Original Drill Grinding Attachment. This durable tool quickly sharpens them back to factory tolerances. The angle adjustment gauge allows you to match the point angle of nearly any bit and even works on countersinks. Designed with a pivoting neck for simple grinding of both sides of the bit. For use with ANSI, OSHA and UL approved standard electric bench grinders or surface grinders.
- 3 in. alnico magnet with 50 lb. pull capacity
- Fits 1/8 to 3/4 in. bits
- Guide sleeve prevents screw wobble or disengaging from the bit, magnetic screwdriver bit tip for fastener retention
- Non-marking depth stop cap protects material surface
- Sliding, Spin-free depth stop/screw guide sleeve
- 1/4″ quick change compatible and impact hex shank
- Removable 1 in. driver bit
- Depth collar lock
WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov
Just what I wanted, works fine
This sharpener is the best $25 I have spent. I did a lot of research on the internet and on YouTube, which really helped to do the set up and use. I also found a detailed PDF on the internet (search words “general tools drill sharpener”). I found this sharpener to give excellent results on bits from 1/8” to ¾” when I used it with my 8” shop grinder. The best setup is to mount the sharpener on a secure surface with a 2-1/4” distance from the middle hole of the sharpener to the face of the grinder wheel. I also suggest the first drill bits be at least ¼” to 3/8”, as trying with 1/8” is too hard for learning the first time. The key to getting the best results is to make the sure the overhang distance is measured (1/2 the diameter of the drill bit) and then locking down the trough feed nut with the lip rest in the drill bit groove (to keep it from rotating). Then you adjust the slotted base to the point where the swing or sweep of the fixture just barely kisses the grinding wheel to the bit at the outer arc. This will allow you to minimize the amount of material removed and still get full cut for the 118 degree angle of the bit. I use a black permanent marker to coat the cutting surface prior to sharpening and after the first sweep to make sure the new cut has been made on the whole cutting edge of the bit. If your cut doesn’t completely go to the outer OD, just make a small adjustment to the feed to get the bit closer to the grinding wheel and then do another sweep cut. After the first cut has been successfully made, you rotate the drill bit 180 degrees and make the cut for the other side. You should be able to do this without any adjustment or advancement of the bit, which ensures you get an even cut on both sides. I found it helpful to oil the pivot pin to ease the fixture movement when doing the sweeping movements. I also recommend user to make sure grinding wheel is ANSI approved, as it is generally understood any grinding on the side wheel is a “no no” and risks wheel disintegration. I found that with the minimal material removal I have recommended, very little wheel side stress was encountered but I took my time with bits over ½” and backed off in small increments to minimize heat which could damage the temper of the bit. The only thing this sharpener doesn’t do which the Drill Doctor will is to sharpen split point bits but you can still sharpen the primary cutting face with good results. I was a little skeptical when I first purchased this but became a full believer after careful setup and use. Most of the problems people have had a really because of the lack of instructions and use.
Easy to assemble, making adjustments with grinder operating is a problem. Fine adjustment wheels for indexing bit must be tight and tray holder also has too be tightened good.
Good and precise tool
This drill fixture has good potential, but the design should be changed to leverage its true capability. 1) The overall fixture design is too tall, as this height lowers mechanical stiffness. This lack of stiffness gives a poorer ground finish on the drill bit. 2) The fixture as designed is really only good for one ground angle, such as 68 degrees per side. Changing the ground angle changes the pivot geometry enough to cause issues while attempting other ground bit angles.I used a major portion of this fixture to creat a much shorter and more robust drill bit grinding fixture, and it works pretty good, even on bits down to .125 inch. But even then care has to be taken not to grind one side much more than the other.
Overall it works but lack of instructions on how you actually use it gives it only 3 stars for me. And even with some videos on you tube , it’s still difficult to set it up.
Drill Grinding Attachmentby General ToolsPackaging Contents: Drill Grinding Attachment and instruction sheetDescription: It is not a drill attachment, but a drill bit holder. This device is a stand-alone mechanism to hold a drill bit at a specific angle so as to facilitate sharpening by placing the bit against a grinding wheel.There is a claim that it has a 3 in. alnico magnet with 50 lb. pull capacity. I never found such a thing.It claims to fit bits sizes 1/8 to 3/4 inch and is made in the USA.No hold down screws included.Usage: The instructions are simply a photocopied piece of paper with poor resolution. I found them to be difficult to follow because they did not have a listing of explanations for the part letters. Do not use the enclosed instructions.By calling General Tool at 800-697-8665, you may request they e-mail you the correct user guide. It is different than the one enclosed with the tool.Further, the tech support people recommend looking at the YouTube videos on the subject. Otherwise you will have conflicting visuals from various pictures.Keep in mind that the naming is incorrect. Remember that whenever it mentions “drill”, it actually means “drill bit”.One must first understand that using this device requires it to be fastened down next to a grinding wheel and perpendicular to it. I just clamped mine in place.Secondarily, the user must realize that the device holds the bit in place to sharpen one side at a time. To do the second side requires the bit to be rotated 180 degrees. That appears to be the purpose for the lip rest used as a rotational stop.There is a chart in the instructions. It gives the proper angle, depending on material to be drilled or the original angle of the bit set you have, and it gives the amount of distance the bit should extend past the lip rest point.I liked that the detents on the angle adjustment scale matched the angle adjustment indicator to lock them together. The angle will not change while using it.I didn’t at first like that the base can be twisted from the top portion, which can be viewed as changing the alignment of the bit and grinding wheel. However, there is a reason for that. It turns out that the bit surface is curved and so the necessity of swinging the bit back and forth on the grinding wheel maintains that curve.I will say at this point two important points. First, the bits can be sharpened very well. Second, the device is finicky to use.There are numerous adjustments to be maintained, and some include locking in place. Therefore, every time you wish to move the bit forward, it requires some fiddling with it. Also, if you desire to sharpen both faces the same, it is necessary to cut one face and then, without any further adjustment, turn the bit 180 degrees to do the other side. Only then can you advance the bit to cut more if necessary. If this is not done, the two sides will be cut to different lengths.Overall Thoughts:Good price, if you don’t have the money for an automatic machine.
Fit and finish is a little lacking on this piece and to call it an attachment is going a little to far as it doesn’t actually attach to the sharpening wheel. To call it an accessory is more accurate. That said this accessory will do the job it intended and that is sharpen the tips of drill bits. If you need something that will sharpen the whole bit you will need something like the drill-bit doctor, if it still exists.
The General Tools drill grinding attachment will sharpen up to three quarter inch sized bits; as opposed to my old bd sharpener that only went up to three-eighths inch bits. My grinder is mounted on a bench that allows this to be clamped in place as needed. Using the grinder’s light or another light shining from the side makes it easy to align the angle for each bit from one-eighths up to three-quarter inch. The guide sleeve, set screw, click-stop angle guide make adjustments quick and easy. There are five preset angles for various drill bits. One nice feature is that the base can be left mounted on the work stand and the tool removed. If your grindstone has a side-grinding ability the attachment can be mounted to the side of the grinder, otherwise it goes to the front.Site to obtain instructions (easier to read).https://www.generaltools.com/productdoc/index/downloadpdf/type/manuals/pdf/825-Instructions_GT_103007.pdf
Well machined precision. This jig produces accurate bevels and sharpened edges normally achieved only with more expensive electric bit grinders. Should you be unsure of the angle to grind, the instruction sheet clearly outlines proper adjustment. Despite its light weight and compact size, the castings are hefty and the milled parts well formed. In my shop, as with many, bench space is always at a premium. Because of this, any tool that is not used every day, is best broken down and stored away. The adjustable slot on the base of the unit allows simple attachment to the bench and easy removal. As this item is small and flat, it is easily stowed until needed again. Truly a useful tool at a reasonable cost.
I am happy with the drill sharpening fixture but the instructions could have been better!
I think this is well made and probably does a good job if you have the patience to set it up and take your time. It takes a bit of adjustment on each bit to get it set properly and you can make a mess of a drill bit very quickly if anything is out of alignment. My grinder is on a wooden workbench that is made pretty stout and it took some creativity to attach the base which is designed to be left in place. It would have been easier to move my grinder. I think I actually prefer the stand alone type of bit sharpener for my hobby workshop.
This little drill sharpener is well worth every penny that it costs. This sharpener will work on bits that range in size from 1/8” to 3/4”. For years I have sharpened drill bits by hand and with other devices and nothing comes close to this little jig. This drill sharpener is easy to use and easy to setup on almost any grinder or belt sander. I set mine up on my 2” x 72” belt sander instead of the side of a grinding wheel. One of the hard parts to sharpening brill bits is getting the same geometry on both cutting faces on the drill bit. This sharpener does this with ease. One note: take small grinding passes for two reasons, this avoids over heating the drill bit and it keeps both cutting faces even so they both are cutting equal amounts material. Once the sharpener is set up its just a matter of getting a feel for what you need to do. As the bits get smaller the setup becomes more critical due to the small amount of bit that can overhang the end of the sharpener. Once set up, bits can be sharpened very quickly, and they look as good as new or better. As shown in the attached pictures the bit is clamped into the sharpener and moved in a sweeping motion across the grinding surface. Overall this is a tool that almost anyone can use, its going to pay for itself very quickly in reduced cost of replacing drill bits. I highly recommend this product as almost indispensable for almost any shop or DIY enthusiast.
I mounted this on the side of my grinder. My grinder has 5″ wheel so I couldn’t mount it in front. Had to mount grinder on wood platform so that the axial would be level with tip of grinding attachment. A 7″ wheel grinder would be better but you should be able to improvise. Looks nice on work bench but an electric grinder would work just as well.
I definitely need to sharpen some of my drill bits and that what i will do tomorrow .My neighbor saw this and said can we shapen some drill bits of mine also and of course I said yes.i have a few bits that need sharpening so it is definitley going to come in very handy for me and my neighbor lol.To all my friends i think you need to check this out so if you need drillbits shrpened this will definitely work for you.
I think it works just fine for homeowner use!
no complaints…..it does what it’s advertised to do….simple twist drill bit sharpening for the home garage….not a professional device but adequate for occasional use…
Did a great job. Much better than I expected
This is a well construction precision attachment. It is better suited for a more skilled machinist rather than the average Joe. The instructions were not helpful at all. After searching several sites I was able to obtain an overview on how to set up the attachment. It must be mounted or clamped to a level surface to your grinder.If you sharpen a lot of bits, then it would be a good investment for you. My grinder came with a drill bit grinding guide and it is much easier to use.
To those complaining about the use of the word drill and not bit, professionals call drill bits “drills” and that is the proper term. That’s why they call the electric tool a “drill motor”. Hope this helps