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Sworker 10 Pcs Long Shank Carbide Burrs Shank Dia.=3mm, Total L. 105mm to 113mm, 1 Clamshell Plastic Box with Hook, 1 Paper Box and 1 Manual.
1. In general, burrs are used counter-rotationally or with a swinging motion. Pass the tool rapidly and lightly over the workpiece in the direction of rotation to achieve fine finishes and chamfers.
2. Don't apply too much pressure on the rotary tool, multiple light passes are better than a single deep one. Let the speed do the work. Do not exceed the max idling and application speed.
3. Clamping more shank depth of the burrs bits, inserting the shank of bits to the bottom of clamping is optimal. If you have to clamp the less shank, please low the rotary tool rotation speed.
4. Use only 3mm or 1/8"(3.175mm) rigid clamp system(collect and nut). 3-jaws-chuck drills are not optimal, the high-speed rotary tools optimal. Compatible w/ Dremel 1/8"(3.175mm) collect.
5. Don't sink the carbide burr for more than 1/3 of its periphery. Recommendation for drives: 3mm shank from 75 to 300W, for coarse cuts, 500W+ and short larger shank burrs are optimal.
6. Avoid impact loads, otherwise the parts teeth will break off, shank will bend. For soft materials, such as aluminum, use a lubricant to reduce debris clogging. Use water as lubricant for glass.
7. Avoid lifting the burr away from the workpiece when starting, operating and stopping the tool, if your rotary tool works at a high speed(≥3000RPM). Using a foot switch is an excellent solution.
8. Always wear ear, eye, face protection and safety gloves. Grip the rotary tool firmly with both hands and use a swinging motion to minimizes the risk of kickback or wobble or sudden movement.
Notes: Bent Risk
The tungsten carbide burr bits must remain in contact with the workpiece as long as the tool is running or turning on or turning off moment. Failure to observe this procedure may result in burr shank bent and an increased injuries risk. If the continuous contact between the bits and the workpiece is not guaranteed, the max idling speeds should not be exceeded. Max idling speed without contact to workpiece: 3000RPM, Max application speed with contact to workpiece: 12000RPM.
Llotus76
Reviewed in the United States on February 8, 2025
This set from Sworker : 1/8” Long Shaft Carbide Burrs are compatable with my Dremel Tool and work nicely for cleaning out hard to reach places on my wood and glass projects. The long shaft burrs do require consistent speed and constant contact with the working surface to avoid injury or damage. This set offers a useful variety of burrs, with reliable results, for an affordable price. 5 Star Set for me ! 💫
Customer
Reviewed in the United States on February 8, 2025
For the price, these will be hard to beat. Carbide ends brazed on the solid steel shafts. At first, I thought the shafts were hypo tubes and not solid. I ground down a shaft end and confirmed they are solid steel.Worked well for my shop use. Again, for the price, these are great!
Brent
Reviewed in the United States on February 28, 2025
Works perfectly in my dremel, and didn't have any problems with it. I like the extra long reach these bits have--it's the whole purpose I purchased them. A decent set to have, depending on your usage. I don't know how long they'll last, but they work fine for my purposes.
Chris Hall
Reviewed in the United States on February 27, 2025
This 10-piece tungsten carbide burr set is perfect for good cutting, grinding, and porting in tight, hard-to-reach areas. The 4.5-inch long shank provides excellent reach, making it ideal for working on cylinder heads, engine intakes, exhaust manifolds, and other intricate metalwork. Compatible with Dremel and rotary tools, these burrs offer durability and sharp cutting performance on cast iron, steel, aluminum, and more. A must-have for DIYers looking for high-quality carbide burrs!
George_of_all_trades
Reviewed in the United States on February 25, 2025
These long shaft tungsten carbide burring bits are some solid pieces. So far they have worked great for my woodworking projects. Once in a while, I need to reach a very awkward spot that I have drilled out from the other side and wood has splintered out and I just want to clean things up.And these long shaft burring bits reach in tight spots and do the job very well. So far they turn straight when attached to my hand drill so I can accurately target my work spot from a distance.I haven’t used them on metal or any other surfaces other than wood and plastic and so far these have done the job. So far very satisfied with the quality of these long shaft burring bits.
NadeMagnet
Reviewed in the United States on January 31, 2025
I can't possibly count all the times I've used my Dremel over the years. It's such a useful tool. But often it doesn't work out well for places where its body gets in the way. So I'm happy these came up for review. They seem as well built as all the bits that came in my Dremel kit. There is also a wider range of bits than comes with the kit. I have no complaints with this.
SteveTX
Reviewed in the United States on January 30, 2025
Somewhat misleading ad imho. I've ported heads iron and aluminum. Also aluminum intakes. About the only think I can say is if you use these to port heads or any major porting up in a intake you better pack a lunch. Its going to be a long day. I would say these could be used for minor touchup or maybe finishing up in a runner on a intake that was being gasket matched. That is about all I would recommend these for on heads or intakes. I think for plastic from 3D printers or wood carving they would be well suited for.
CR
Reviewed in the United States on January 25, 2025
Coming in at ~$1.50 a bit, I had some pretty low expectations for this set of rotary burrs - and they are pretty much exactly what I thought they would be: garbage. The vendor positions these as being useful for porting out cylinder heads, but I don't think I would ever even dream of using these for that. They are very low quality, so much so that I would probably only ever use them on soft materials like wood.I think the first clue that these were not going to be particularly great was that the bits don't even look like the image that the manufacturer put on the packaging. That would normally not be that big of a deal for me except that the carbide is braised to the shaft. The bits on the packaging have a large collar to accommodate that. These do not. If you review the listing you'll detect several different versions of these bits - none of which actually look like what was put on my doorstep!Speaking of brazing, I have to say this is some of the worst that I have ever seen on any type of carbide. There are obvious voids which you can see in my photos, and I have very little hope that the surfaces were prepared correctly. You can see (photos) by looking at the opposing end (that inserts into the tool) that the shafts were sheer cut. That begs the obvious question of whether they were ground flat before brazing the tips on? Considering the cost and obvious quality deficiencies, I am going to assume that they were not. If you are using this in a rotary tool, you better be darn sure to use it at a low RPM and with a healthy amount of PPE. As with anything eye protection is number one, but I don't think safety glasses would offer enough of a margin in this case. I would definitely use an impact-rated face shield as well.I would recommend in in very strong terms that you avoid these bits. They are not safe for use for almost any purpose. Do yourself a favor and find a higher quality set. It just is not worth the risk to your personal safety. Needless to say, this set is going straight into the bin.
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