Kutzall Extreme Sphere Rotary Burr 1⁄4" Shaft, Very Coarse - Woodworking Attachment for Bosch, DeWalt, Milwaukee Tools. Abrasive Tungsten Carbide, 1" (25.4mm) Head Diameter, SX-1C

This is an amazing bit! I needed to drill little "cups" into a thick acrylic sheet and this was the only bit I could find that would help me achieve this task. It did the job perfectly and has held up in quality. It is just as "sharp" as it was with the first round of drilling. I also used it on wood with the same excellent results. It is extremely difficult to find this type of bit and I am extremely happy with the results and durability that it provided for a very reasonable cost!

Love this little carving monster. Made a smooth bowl for wood spoon; fast, great deburring tool, also. Perfect!

The cutting capacity is surprising. It removes wood fast and easy.

This is described as "coarse", which I think is mildly accurate. I used this kutzall ball to test cut some grooves into walnut drawer face frames - creating a "scalloped" appearance. The cut is very rough - lots of fluff from the tearing action of the cutter. This required me to sand each cut by hand. Instead I used a large, dish-carving bit which gave me a much cleaner finish.I think my intended purpose is somewhat different than what most people buy this for - however, I do think the majority of people should be away of the cut finish being very coarse. I'd equate it to 60 or 80g.The ball is also a heavy rotating mass. I used it in my trim router, but it was really heating up.

It says extreme and it means it. It works very well. and is the best on the market

My wife wants to make a candle out of a birch log from a tree we cut down last year. I decided to get this ball to carve out the cavity instead of using one of my discs. I can honestly say, this made easy work of removing material. Attached to my Hercules grinder I carved out the cavity of the birch log in about 15 - 20 mins. I had no issues with the ball skipping or gauging the material.I have always been a fan of Kutzall products. They are the burrs and discs I reach for, whenever I am grinding.

Ok, so this burr worked even better than I had hoped. I was carving into dense resin to try and reclaim a fudged piece and this tool made the job much easier! Very happy how it went through the materials and very controllable; as I thought the burrs might catch and grab a bit more. Nope! Great design. And it held up great with no visible dulling of the points/burrs.

The tool is rated for 12k rpm- I have a 1speed 13k angle grinder with 1/4 adaptor. Bear that in mind. I used it on a maple wooden bowl. There is a learning curve as the tool only effectively cuts smoothly in one direction- it shreds and has a very strong kickback with any other directional changes. A very gentle approach with an iron grip are required. I have used other ball grinders specifically for angle grinders and had an even worse experience. The kutzall can at least leave a semi-smooth surface after getting the hang of it.If you already have the correct tools to accept a 1/4 shank, hopefully you have a better experience. I also purchased the kutzall fine round cutter- those clog up almost instantly and if not caught in time will burn the wood.

works perfect! love it

Good for shaping

This burr is amazing and powerful but check first if it fits your Dremel size. Mine fits in my drill luckily but not in my Dremel tool as the shaft is quite thick.

Pour utilisation Perso. .

der Kugelfräser ist deutlich besser als ich erwartet habe, ich kenne die Produkte ja bereits und bin sehr zufrieden damit. diese Kugelfräser ist recht fein, trägt aber dennoch ordentlich material ab. ich würde ihn etwa mit korn 100-120 vergleichen. die kutzall werkzeuge sind wie dauerhaft scharfes schleifpapier! ich finde sie genial und liebe es damit zu arbeiten. wenn diese kugel verstopft kann man sie wunderbar mit einer messingdrahtbürste und pressluft wieder frei machen. ich werde sicherlich noch mehr von diesem hersteller kaufen. das Werkzeug ist zwar echt teuer, aber die Lebensdauer ist großartig. Preis - Leistung = Ausgezeichnet