Dremel 409 36-Piece Rotary Tool Cutting Accessories | For use with rotary tools that fit 1/8" shank size, Cut-Off Wheels, Ideal for Cutting Bolts and Screws

They’re good for thin metals and screws but do shatter easily if you’re using them on thicker items. They cut cleanly and don’t stir up too much dust and heat, as long as you’re careful and go slowly

I had previously been using Dedeco cut off wheels and was satisfied with the quality however they were much more expensive than the Dremel. I read a bunch of reviews here that these cut-off wheels would easily crumble and fall apart. I decided to give them a try. Here are my results: 1) Just like the Dedeco they are brittle and you must handle them with care especially not to bump side to side 2) Don't over tighten the screw in the collet or you'll damage the wheel and it will more easily break 3) Use a steady hand(s) when cutting and avoid any side to side movement. Either wheel (Dedeco or Dremel) will break pretty easy if it receives side pressure 4) I used the Dremel to cut through heavy duty staples (3/16"). I was able to cut through about 8 staples before having to replace (I had to cut dozens and the results were pretty much consistent). I thought that was pretty impressive. It was also 20 degrees outside. I even had a few wheels grab the stable a bit and they still did not break but any sideways movement they would usually fall apart soon. 5) I also used these to cut through an M6 (metric - 6 mm or .24") stainless steel bolt. Stainless is really tough but I was able to cut through the bolt with just one cut off wheel (just barely one). Bottom line - if you hold steady (preferable two hands on the tool), avoid side to side motion, let the wheel do the cutting, don't exert too much pressure, and don't over tighten the collet screw these should work just fine for most small cutting operations. I only cut steel... not sure how it will perform with soft substances such as plastic etc. Soft substances could cause heating and gum up.

These cutting wheels are cheap and perform superbly when used as advised. ([...]) I currently use these to cut aluminum alloy metal ferrules as well as certain plastics, such as those that make up ice coolers. I've broken cutting wheels because I've gone against these tips. With any high-powered tools, caution and scrutiny are always a necessity, especially for obtaining high performance. I've copied the 'Tips' section for those who decide not to follow the link. Pros: - Does exactly the following: Ideal for cutting, grooving and trimming all kinds of metal. May also be used on other materials-including thin wood, plastics and ceramics. Cut-off wheels make it easy to cut bolts or screws or make slots in rusted or stripped bolts and screws for removal with a screwdriver. -Cheap Cons: -Fragile and can easily break when not used as advised. User Tips The cut-off wheel cuts only along its edge. Do not attempt to sand or cut curved holes with them. (I do this, but very carefully. Not recommended bc they do break if not carefully applied!) Secure objects to a stable surface while working. Hold the tool so that the wheel is at a perpendicular angle to the material being cut. Keep a light touch, as the wheel will break under too much pressure. If chattering occurs, increase speed. Plastics require very slow speeds, because they tend to melt at the contact point. Wood requires low speeds also, always experiment on a scrap first.

These are the thinnest rotary tool cutoff discs I could find. They work well! But be sure to wear eye protection. Push them too hard and they will break, sending pieces of the disc flying across the room.

These can be expensive and also hard to find. I looked in lots of stores as my supply depleted. These reinforced cut-off wheels are basically an inch in diameter and very thin which is beneficial in some situations and I like using them despite the fact they can break easily. The other cut-off wheels which are designed for use with an easy release mandrill are larger diameter and thicker. They come in handy as well, but are too big for some projects.

Great replacement when I used all of the ones that came with my Dremel

These are very thin thus fragile but they do the job. You just have to carefully control the Dremel when cutting. Unlike the cheap Diamond coated variety they are the only kind of cut off wheel that really works. (I learned my lesson the hard way)

They did the job, cutting .5" thick plywood. It took a long time and went thru about half of these blades doing it. Had to cut both sides of wood to get complete cut, I should have looked at the dimensions of these blades prior to buying. Make sure you do not drop the blades or tighten them too much, as they are pretty fragile. I had a few break putting them on my dremel, but I guess that's why it's a pack of 36. For wood, I think when these run out, I'll buy a metal saw blades or the reenforced metal grinding blades. These are just too fragile for me and had multiple pieces fly and hit my face, but I might have been too close.

カーボンの板やパイプを切る時に重宝しています。 減りは早いですが切れ味は最高に良いです。

Ótimo produto

Another great product from Dremel, be aware that these discs are very thin and a little delicate, so well suited for small slow work...

Used these to cut out rusty fender seams from a 60 year old car. I thought I would use most of the 30 but they did the job really well and lasted.

yes they were what i expected , i just had no idea that they were coming from Japan but the service was superb