VEVOR Drill Bits Sharpener, 3-13mm Drill Bits Grinder Sharpener, Lip Relief Angle & 95°-135° Point Angle Adjustable Drill Bit Re-Sharpener, Portable Sharpening Machine with 11 Collets, CBN & SDC Wheel

Well built, no plastic or light duty components. Collet selection makes for fast and accurate sharpening. Process is easily understandable and pretty much fool proof. Well worth the money if you need to sharpen any quantity of drills.

Buy it!!!! It’s everything you need to sharpen and maintain drill bits back to new!! It puts a factory edge back on with the option to add a split point so your bit will not wander off when starting to drill! It also has many adjustments to cover everything you need. I’ve had other plastic cheaper sharpeners but none compare to this. It’s built heavy duty and it’s built for life. You will not be disappointed!!!

I’m using this VEVOR Drill Bits Sharpener in my CNC machine shop, and it’s been a reliable tool. It can sharpen drills up to 3/4" quickly and consistently, which saves us time and keeps tooling in rotation. For a professional-grade sharpener, the price is very reasonable. It doesn’t do true split points, but it can modify them into web thinning, which works just as well in practice. Overall, it’s a cost-effective and dependable solution for keeping drills sharp in a production environment.

Very well built. In common with other Chinese products, the manual is not very informative. In particular, the relief grinding station is not explained very well. It comes adjusted from the factory, so if you play with changing settings like I did, you will have to spend some time sorting it out. Once adjusted, you get a geometry that seems to cut very well. I also have a Drill Doctor. The Vevor applies a smoother finish to the drill end and cutting edges, and the final result just looks better. The Vevor wheel cuts much faster. The Drill Doctor can be tedious when sharpening larger bits, probably because of the much smaller grinding wheel. However, the Vevor doesn't have small collets, whereas the Drill Doctor can sharpen 1/8" bits. So I use the Drill Doctor for smaller bits.

I have purchased the MR-13B model. It is cheaper on Amazon than model A and it is better in my opinion. There are several YouTube videos, describing both models in detail. Somehow you led to believe that model A splits the point and model B just thins the web. This is not true. Model B in my opinion is an improvement over model A. It allows you to achieve a true split point and has several ways of doing it. I am not going to write about every detail, but will concentrate on staff, which is not well described and is important in my opinion. This little machine is well engineered and constructed. It weighs 17.7 lb with collets, chuck and grinding wheel. There is no plastic anywhere except some electrical parts. The power supply is 120 VAC, 60 Hz. The cable can be separated from the unit. Electric part is very simple - there are a power receptacle, switch, rectifier bridge and a 110 VDC motor. There is no other electronics in the unit, so it has to be reliable. All parts are mounted on a 7 mm thick steel plate. They are steel (no aluminum here), machined and ground where necessary. That is how you achieve the accuracy needed for drill sharpening. For sharpening you have to setup each drill in the setup station at the left side of the machine. You use a chuck and a collet of the appropriate size. The collets are standard ER20 for sizes above 5 mm. For smaller sizes the collets are modified to include an extended nose and relieved bore. Drills smaller than 4 mm are very difficult to setup properly in this station and I would recommend to do a visual setup or just grind them by hand. The chuck has 2 bearings to reduce the collet clamping torque Once your drill is setup in the chuck you move it to a sharpening station, where you sharpen both lips by rotating the chuck back and force. This station has a bearing as well for easy rotation. If you want to split the point after sharpening, move your chuck to the top station and again rotate the chuck left and right. This operation is adjustable for the depth and width of the cut. The produced split point looks somewhat different from factory drills, but works the same way. The difference is because this machine uses just one wheel for sharpening and point splitting. The finished drill has 4 distinct cutting edges, just like the factory split points. This machine comes with CBN and diamond wheels, model A includes only CBN wheel The wheel is steel with plated layer of CBN or diamond grit. On the attached pictures I show the diamond wheel. It is 3" in diameter, 10 mm wide and has approximately 1/2" bore. The wheel is clamped to the adapter, which is attached to the motor shaft by 3 set screws. I have only tried the CBN wheel for HSS drills. It cuts very aggressively, but leaves an acceptable finish for bigger drills. For small drills you better find a different way of sharpening. Overall my level of satisfaction with this machine is very high. I am getting good drill grinds and nice split points. But don't fool yourself into thinking that it will do the grinding for you. You need to know what a good grind looks like and adjust the machine accordingly.

The Vevor 13B is one of those rare off-shore products that really works, and works well. Right out of the box I was able to take a cheap drill bit I had on hand, sharpen it and put on a split point (technically thinned the webbing). The sharpened bit easily drilled through some 3/16” plate steel with little effort. The Vevor is sturdy and well made, and the collet has close tolerances so it fits snugly in the sizing and grinding openings. I took off a star for the almost complete lack of included instructions and the horrible (nonexistent) support on the Vevor website. I asked a fairly simple question, and after 4 days of AI-generated blather I turned to Youtube where I found several excellent videos describing the differences between the 13A and 13B, as well as tutorials on how to use the machine. The Vevor works so well that it actually takes longer to watch the videos than to sharpen the bits yourself. But watch the videos, they make using the Vevor a snap. Overall the Vevor 13B is excellent addition to my shop. I hate dulling a bit on a weekend night and having to spend 30’ driving to buy a new bit, or waiting until the next day if the stores are closed. This takes 2’ and I’ve got a new bit ready to go. The obvious comparison is the Drill Doctor. I have a Drill Doctor, but it is a toy compared to the 13B, and costs almost as much. No comparison, the Vevor consistently produces an excellent finish and a fast cutting bit. The Drill Doctor takes longer and is not as reliable; in my hands about half the time I have to take a 3rd or 4th pass with the DR, and sometimes even that does not make a useful bit. With the reliabilty of the 13B bit, the DR will go on marketplace or the scrap heap.

After re-sharpening a couple of dozen 118- and 135-degree drill bits, I'm generally impressed with the results. Grinds are symetrical, bits cut evenly on both faces, holes have minimal "wobble". The included instructions are pretty useless -- you'll need watch a YT video to get up to speed. The collet collection covers 1/8 - 1/2" bits. Collets are ER-20 and ER-25 style. Dialing-in the bit-diameter (web-diameter) is pretty low-precision -- the alignment arrow is an inch away from the dial. My biggest complaint is safety-related: while grinding the point angle on the side port, the abrasive wheel is visible in the top port and it's pretty hard to find a position that's out of the "line-of-fire". Eye/face protection is a must, and the same goes for respirator masks. The collet storage is okay (unless you transport the sharpener 'cuz all the collets will fall out of their retainer holes) but there's no place to put the workholder, kind of a big oversight IMO. All that aside, the unit consistently delivers sharp, well-formed drill bits, which, if you'll excuse the pun, is the whole point.

I was not sure about this but once I used on a burnt drill bit that was so dull it would hardly make a mark after less than a minute it cut like new and so easy to use I could not believe how easy I gathered every drill bit I could find sharpened them all most taking less than a minute each they all cut like new some cut better paid for it’s self first box of bits I sharpened I like using it and I love the results