Cutting Wheel Set for Rotary Tool,6pcs 1/8" HSS High Speed Steel Circular Saw Blades with Shank Extension Rod for Wood Plastic Metal Cutting

Does the job, happy with the results.

I knew before buying this that the part that goes into the drill is weak and can bend if you apply too much force, but it's clearly designed for small craft drills rather than the more powerful beasts. There are other sets available with two cutter holders where one is much more robust and is clearly designed for normal drills. However, my intention was always to beef this up to prevent bending. The cutter holder has an 8mm diameter on the wider part, and that fits neatly inside a 10mm pipe with 1mm thick walls, so my plan was to stick it permanently into a section of pipe using epoxy, and the plan worked perfectly (I happened to have a pipe the right size without knowing in advance what size would be needed). This has the additional advantage of getting the cutting disk away from the drill head, giving you more space around it for cutting without the drill head restricting the cutting so much, and that transforms its utility. This works well, and you can actually hold the pipe while it's spinning to get more control over the cutting, though you really need to use a wooden or plastic ring around it to protect your fingers - the heat builds up fast otherwise so you can't run it for long. I'm using a 300mm pipe as that's what I happened to have to hand (obtained for another purpose which it can still be used for with this thing attached into it), but a 150mm to 200mm pipe may be the optimal length.There's another adjustment that I've made though, because the disc had a slight wobble due to the surface it presses against not being perfectly perpendicular to the shaft of the the cutter holder. The cure for that was to spin the holder it in a drill while pressing it against a sharpening stone. A bench drill would be best for doing that if you want it done with high precision, though it may be that a little wobble isn't a bad thing as it will widen the cut a fraction and may help avoid the disc getting stuck in what you're cutting, but the original amount of wobble seemed excessive to me as it was nearly doubling the width of the cut with the 50mm cutting disc.Edit: it's best to fit the disc the wrong way round for safety as it can grab otherwise and jump, potentially violently - it takes a lot of strength to hold it if you use it the "correct" way round, but it cuts more peacefully when used the "wrong" way round. It gets hot, so avoid touching it until it's had a chance to cool down.

2 main dislikes about this is:1) wrong picture attached, blade sticking out of protecting shield, parts holding it is too long2)very low quality blade - having problem to cut through 8mm osb boardEven if cheap(i just added it to to my order to make free postage) I dont recommended.

All good.

My husband use these to cut something he needs. Thanks.

Did the job

If you will go above 20k RPM (at least with the biggest one) it will bend the shaft and potentially damage your rotary tool. (Don't ask how I know :( )

just the job