There appears to be several variations of this tool. The version by General in my opinion is very well made for the price point.Made in USA. Fit and finish and quality of materials exceeded my expectations. Set up and operating instructions are clear.
If you take the time to read the instructions and set up and operate the jig per the instructions the results will be far better than what can be achieved by sharpening freehand. If you primarily drill in wood then sharpening free hand is the way to go.
However if you are drilling holes in metal for precision machine work then it is paramount that both cutting edges are exactly the same length and have proper relief angle. I have sharpened bits 1/4" - 3/4" with this jig and have achieved close to a factory grind.
No more oversized holes and repeated trips to the grinder to make adjustments.
So I give this a 4 out of 5 because it works. I sharpened a drill bit I dulled because I used it on concrete (yes i forget my masonry bits). After sharpening it cut through wood like butter. Where before the sharpening it wouldn't drill at all.
No directions so it did take a little bit to get it set up correctly. You basically want to sharpen the lead edge of the bit which can be a bit tricky. From my first picture you can see how I have the sharpener laying flat with the bit in one of the slots.
Even though this worked it took a little bit of practice to get the bit rotated just right to completely sharpen the lead edge of the bit. First few times I sharpened the trail edge of the bit more which does nothing.
Rotated a little and got the lead edge sharpened. Now this is where I have a complaint about the tool. When you use it as is the lead edge of the bit that you want the sharp edge on is facing the table and you can not see it properly.
Works great for aligning screws. I know you don't really need this but so much easier and faster and centered.
The low ratings for this tool reflect more on the user, than the tool. As a professional carpenter for over 40 years, I had no illusions or expectations. Drill bit sharpeners can cost up to $600, so expecting a $10 jig to perfectly hold and sharpen a dull bit is just plain stupid.
That being said, your fingers hold the dull bit in place; there is no stop to keep from grinding too much, and no clamp or method of orientation to precisely return the dull bit to like new. You put bit in appropriate slot, orient it by eyeball and grind off what you want on one side, rotate bit, and cut other side by eyeballing and feel.
Crude, but effective. I sharpened three bits to get the hang of it, tested said bits in some ipe wood (super hard ironwood), and decided it was well worth ten bucks. I threw it in one of my truck tool boxes, and it has saved me a few trips to hardware store.
Love it!Replaced on that was very old on a very old grinder. Easy to install and makes my work a lot easier.
I'm a home DIY kinda guy and don't need expensive, original Vix bits. I probably use these once every couple months and for that these come in handy. These also are very affordable but definitely not high quality. For that expect to pay at least three times the amount that these cost.
These however will last you an awful long time if you are the occasional DIY person and if taken care of. These will definitely make it easy to drill the pilot hole in the exact center of a hinge or similar.
Buen producto, solucion mis problemas que tenia con las brocas que pretendia tirar
I purchased this to sharpen a lot of drill bits. I go through drill bits like a 60 year old man (me) goes through vitamins. This sharpener does a great job of sharpening bits, which is a good thing since it has no other purpose in life.
I used to just sharpen then free-hand, but my vision isn't what it used to be. Mounting and set-up are a bit of an issue, but after my second attempt, I got it right. I mounted mine on the side of my grinder (I know that's a no-no, so don't hate me).
I tried mounting it in front, but I couldn't get it to work well with my Craftsman grinder. And it would have required removing the sharpen when I needed the grinder for other purposes. I try to multi-task in my shop, so mounting and removing the sharpener would have been an issue.
With the side mount, I can leave it while grinding on other projects. The instructions are very poor, so you have to have a little built in handyman talent. After you get it mounted and set up, you can sharpen a bit in under 2 minutes and have a perfect angle and edge.
This is a hollow diamond bit so, unlike regular drill bits, you do not have to drill half way through the glass, then flip it over and drill through the back in order to avoid blowing out the back. This is a big plus in my book as drilling through the back can be really hard to line up properly.
It comes with an oil that I have yet to use. I put the glass I'm drilling in a pan of tap water and hold one side down with my finger. Not terribly professional but it gets the job done easily.
I prefer using water because I don't risk the glass getting so hot that it cracks. However, I've only drilled small pieces of glass and this method is probably not very appropriate for larger pieces. The noise generated by the diamonds against glass is ear-splitting.
I highly recommend using ear protection when using this product. And, of course, if you do use water, take the necessary precautions you would when using any electrical tool around water. The only con I can think of is that dremmel does not have a smaller size bit like this.
Don't the sharpest in tool kit.
Only used it once the 1st time today so far so good good value looks like it does what it's supposed to. Actually saw this in my Facebook feed in like usually I check on Amazon to see because the prices are usually better and it was and I bought it
Not the easiest to work with but gets the job done.Directions lacking. Made in China sez alot. Tired of buying replacement bits and we don't live close to the store either.
These burrs have served me well through the various projects on which I've used them. They remove a decent amount of material, but are easy enough to control. My only wish is that they came with diagrams to show which angles and situations are the most appropriate for the shape.
It does what it said will do just have patience with it. I sharp 5/8 drill bits save me some money . Good product for the money better than dr.Drill bit IMHO.
I find I am using the centering drill set more and more in places I had not expected when I ordered it. The sizing range for the drills has so far, covered every job I'd needed them for. Seem to be well made and easy to use, simply great.
It is wonderful to know that if you want the center the hole, that is where you will get your starter hole.