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⚡ Elevate your craft with the Kutzall Sphere Burr — where speed meets precision!
The Kutzall Original Sphere Rotary Burr features a 1" diameter coarse tungsten carbide head designed for rapid, clog-free material removal on wood and various non-metallic materials. Compatible with 1/4" collet or adjustable chucks, it offers exceptional durability—outlasting conventional abrasives by 100X—and easy maintenance. Handcrafted in the USA for over 60 years, it’s the go-to tool for professional woodworkers and artisans seeking precision and longevity.

| ASIN | B0037MM92K |
| Assembled Diameter | 1 inches |
| Best Sellers Rank | #25,098 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #39 in Cutting Burrs |
| Customer Reviews | 4.6 4.6 out of 5 stars (413) |
| Cutting Diameter | 1 inches |
| Date First Available | February 8, 2010 |
| Finish | Unfinished |
| Item Package Quantity | 1 |
| Item Weight | 1 ounces |
| Item model number | S-1-CAN |
| Manufacturer | Kutzall |
| Material | Original - Coarse |
| Measurement System | English, Metric |
| Part Number | S-1 |
| Shape | Round |
| Size | Head Diameter: 1", Head Length: 1" |
C**M
Better than the Saburr Tooth
I am genuinely surprised at the quality of this tool. I used it to grind out the hollow part of a spoon and it worked wonderfully. I did 2 spoons from the same maple board. One board I used the Saburr Tooth sphere coarse and the other I used this Kutzall coarse. I thought based on looks that the Saburr Tooth would do the better job, but actually the Kutzall performed better, both in the speed of material removal and ease of handling. I thought the Kutzall would clog with wood and require cleaning every few minutes, but the opposite was true, it never clogged. The Kutzall actually ground out the wood and it came out in a fine dust, while the Saburr Tooth cut out much larger pieces, but at a slower removal rate. The wood heats up with the Kutzall, but it doesn't burn, at least if you keep the tool moving. I also got the fin Kutzall for clean up and it works well too, just not as profoundly as the coarse Kutzall, which is to be expected. I'm glad I got these tools and wish now that I hadn't got the Saburr Tooth tools. I have a dedusting system and work with the project piece with the Foredom rotary tool right at a point of dedusting suction. I generate a lot of the dust and most of it is captured by the dedusting system, but not all, so be sure to wear a dust mask as well.
Z**E
Good bit
Good product did what I wanted it to do
R**D
Heavy-duty, but poor finish
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.
V**S
Nice little cutting tool
Used this tool for cutting in set curves for oak drawer faces. Cutting was clean, easy, and even though it was a coarse cut, ihere was little smoothing needed. Nice tool.
B**A
Very aggressive bit
Good bit, but It could use a longer shaft
C**R
Last forever
Very nice
A**R
Not for drill press
Was hoping this would make easy work carving a stick on a drill press. Not at all for that use. Like other reviewer using a hand drill, clogs immediately and burns wood within moments. Also leaves a weird bump in the center.
C**C
Works great!
This bit handled maple and red oak easily. The barbs got full of sawdust after an hour of use, but it was easily cleaned out with a quick wire brushing.
C**N
Calidad
Muy satisfecho con el desempeño de esta fresa. Es duradera y desbasta más que otras fresas más baratas.
S**E
Lo consiglio come da recensione
Ottimo articolo, anche a bassa velocità, a mio parere media sgrossatura, gambo da 6,3 mm
L**T
Toppen
Riktigt bra och hållbar kula. Kommer köpa flera i andra storlekar.
A**N
Perfekt
Perfekt
A**X
3 hours of use
First. The measure is not compatible with makita or any other tool. Is the US standard which here in europe no one use. Second. I use the tool for less than 3 hours. The shaft has bent and now I can no longer use it because it causes the machine to work forced
Trustpilot
2 weeks ago
2 months ago