50pcs Diamond Coated Grinding Head Grinding Burrs Set for Dremel Rotary Tool

I can only rate their effectiveness on wood. It use them in wood modeling and they work great. Its nice they come in their own container. Great price and so far seem to retain their bringing surface well.

These work fine in my Dremel tool. I use them for the fine creases and veining in my wood sculptures.

I like the bit combination included in the set. I'm able to use the different bit combination to perform the different grinds needed. One thing to keep in mind is to consideration the material you are using these bits to grind and the Rotary speed settings (Check your Rotary Manual). That will determine the longevity and wear down of a bit tool. 🛒😁👍

These worked better than expected. They wear down pretty quickly but they’re cheap too. I don’t do a lot of grinding and used this to make a memorial stone for my dog. It did exactly what I needed and I’m very happy with the results.

These diamond grinding wheels work well on stone using a dremel. For longer grinding life, you need to avoid overheating them. This can be done by keeping the overall speed of the grinder in check, not trying to take off too much surface at a time, and with the addition of a water drip. For the overall price and functionality, they are a good price point.

I'll admit, I trashed a couple of the burrs in this set, and it was from my mistake. For some reason, I got it in my head one day that these 120 grit burrs were 40 grit, so I started wailing on a piece of quartz with them. After I realized my mistake and started using these burrs in their proper context (which for me, is detailing stone carvings AFTER I've roughed in desired shapes with coarser burrs), they work fine. I still think they wear a little fast, but I'm a newbie to stone carving, and as it's the dead of winter at the time of writing this, I'm not carving stone that often since I do so in a basement that's very cold during winter. So it's entirely possible that my lack of experience and lack of articulation is fully or partially to blame for the burrs wearing so fast. I was eager to try the burrs that have the larger diameter heads, but I find that they're actually tricky to handle. I'm using a rotary tool that has a flexible line attachment, and it's harder to articulate the pressure I apply to my workpiece with the larger burrs. I don't have this issue with the burrs that have smaller diameter heads. But that's just my experience, your mileage may vary, both in how the burrs feel to you and how long they last. I do want to point out I don't carve stone wet; I will occasionally stop and dunk my workpiece in water, but I don't have a means to keep water constantly flowing on my workpiece and tool at this time, so that may be another factor in why the burrs have worn relatively quick for me. I don't know if I'll buy these again when I need more burrs, but I'm not unhappy with them yet I don't feel that they're outstanding in any way either.

Robust diamond grit, well adhered. I used diamond primarily on carbide and on harder tool steel, but my first test of these bits was cutting a hole in a ceramic pot, which was accomplished dry with no discernible loss of grit.

Great product and just what I needed I will be buying another one

The burrs are exactly as advertised. I have used some of them to smooth the surfaces of some stones and they worked well. I feel they are good value.

llego muy rapido

Great product, wish the bits lasted longer. Depends on the hardness of the material but overall works well for what I needed it for.

You definitely get what you pay for and for the price you can replace as needed I guess. The Diamond grit wears off pretty fast. Faster on some bits than others. I would purchase again based on price not quality since I am new to my hobby. For information purposes I am using these on rocks to shape them for jewelry.

Didn't have high hopes when I saw the price But they fit what I was looking for. I've been using them on glass with a steady stream of water. They are well balanced, reasonably durable and can remove material quite aggressively. I would definitely buy these again.