Vanadium Steel: Least expensive but wears quickly. Precise cutting. Can be operated at low speeds.
High Speed Steel: Good balance of cost and durability. Maintains hardness (temper) at high speeds.
Available in the widest range of diameters. Uses include: drilling, deburring holes, enlarging holes, carving recesses for sweat soldering, and reﬁning bezels/seats for stone setting, because of its shape it can be used at any angle and can get into tight areas easily.
Similar in shape to the hart bur, but with straight sides, can also be referred to as a “Q” bur. Available in a wide range of diameters. Primarily used for cutting seats in prong settings and bezels and for tube settings. It is often used to rough out a seat that is reﬁned later with a hart bur.
This is the most commonly used bur for stone setting, also called undercutting HD bur. Its shape makes it perfect for cutting seats in prongs, channel and flush settings. Hart burs can also be used for scoring lines or as an alternative to flywheels for bright-cutting.
The standard cone bur has a straight taper that comes to a point at its tip. It is useful for enlarging and deburring holes and, in ﬂush setting, for re positioning a hole before reﬁning the seat. Cone burs are also available with a rounded end.
With ﬂutes on the inside of its cup-shaped head, this bur is used to round the ends of wires, reﬁne the shape of prong tips or create domed rivet heads. Because it tends to clog easily, the cup bur should always be used with lubrication.
The straight sides of this bur make it a good alternative to a ﬁle, especially when removing large amounts of material. Large diameter cylinder burs are primarily used for grinding the insides of ring shanks.
Similar to a cylinder bur, but with a much lower proﬁle. This bur has cutting ﬂutes along its outside edge as well as the top surface. It is perfectly suited for removing material from a thick bezel when setting a cabochon.
As its name suggests, this bur tapers to a sharp knife-like edge along its circumference. It has cutting ﬂutes on both top and bottom surfaces for grinding in tight areas such as prong seats. Can also be used to remove material from ﬂat surfaces and for scoring lines.
Shaped to get into the tightest of spaces, this bur has many uses, including: enlarging and tapering hinge pin holes, repositioning drilled holes, removing excess solder from joints, and ﬁne tuning openings in box clasps and other mechanisms.
Available in many shapes, including drill bits. Instead of metal cutting surfaces, these grinding burs have surfaces that are impregnated with diamond particles. They work by grinding away material and are ideal for carving glass, stone, ceramic and metal. Must be used with water as a lubricant.
We also sell HSS drill bits , a wide variety of other shaped burs, silicon mounted abrasives & bristle brushes for in your rotary motor. Even handy storage for them! Quality brands like Edenta, Eve, Vallorbe, Foredom, Komet & many more!