Face Mill Cutter

TUNGALOY-NTK AMERICA INC. 3726 N. Ventura Drive Arlington Heights, Illinois, 60004, U.S.A. Phone: +1-888-554-8394 Fax: +1-888-554-8392

Cooksongold is the UK’s largest one-stop shop for the jewellery maker with over 20,000 products including a huge stock of Silver, Gold, Palladium and Platinum bullion cut to your requirements (sheet, wire, tube, solder, grain, settings) as well as huge ranges of tools, findings, loose and finished chain, gemstones, ring blanks, Silver clay, beading materials and much more.

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Bestcenter milling insert cutting tools

DoMultiRec is a versatile milling cutter with center cutting capability, enabling a single tool to perform multiple milling operations, including drilling. A uniquely designed insert integrates a center and peripheral cutting edge on one side of the insert, and, since the insert is double sided, the same insert can be used either for the center or peripheral position for up to four indexings, front and back. This doubles the cost-per-edge economy when compared with conventional plunge milling cutters using single-sided inserts.

Cylinder burrs are largely used for metal removal, and perform a similar function to a hand file. The twist cut pictured above can be used to grind and smooth metal, and is particularly useful for the inside of ring shanks thanks to the wide cutting face. This type of burr would be used for rough shaping and finishing, and is best positioned with the shaft as far inside your collets as possible to reduce chatter. The more support you can give both your burr and your metal, the better, as it reduces the vibrations caused by the speed of the drill.

Now that you have read our hints and tips on how to make the most of your burrs, why not take a look at the other parts of this blog series where we explore stone setting burrs in more detail as well as how to choose the right type of steel burr for the jewellery design you are working on.

Indexable End Mill Cutter

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A cylindrical cross burr is a more aggressive version of a standard cylinder burr. It has straight blades with tiny rows of teeth along them to maximise cutting, and can be used to remove large amounts of metal. The tiny teeth can be prone to clogging when used on softer metals, so use with a lubricant to help with this. This is a really hard working little burr which will achieve rough shaping and texturing results in no time at all. They are also very good for taking sprues off of castings; you just need to hang on quite tightly!

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This is the final part of our guide to burrs, where we will cover some of the shapes and profiles which don’t fall directly into the stone setting category. It is worth noting however, that the way in which burrs are used is completely open to your own interpretation, so don’t feel restricted in any way by the descriptions provided here. We are simply trying to get you started and point you in the right direction.

Indexable end mill vs solid carbide

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Diamond burrs are generally sold in groups containing a range of different profiles. They are coated in tiny diamond particles, which are either sintered into the surface or layered onto the steel. They can be used for cutting, engraving, shaping, filing, grinding and texturing, and are suitable to use with ceramics, glass, plastics and stone as well as softer metals such as gold, silver and platinum. Sintered burrs have a longer tool life, as coated tools tend to wear out quite quickly.

Iwaki, November 2021 — Tungaloy has announced the launch of DoMultiRec multifunctional cutter with center cutting capability that can also drill.

The inserts come in three sizes: 08, 10, or 12, which are designed for the cutter diameters ranging from 16 mm to 26 mm (.625″ to 1.0″), and new MM geometry that is specifically developed for the DoMultiRec inserts. Boasting strong and sharp cutting edges, the inserts are optimized for various milling applications, as well as drilling. Insert grades are available in versatile AH3225, AH8015 for exotic materials, and AH120 for cast iron. DoMultiRec allows manufactures to take a significant step further for cycle time improvement through machining process integrations in a wide range of milling applications.

Wheel burrs are very versatile and can perform a variety of tasks. They have a similar profile to cylindrical burrs but the narrow edge means they can produce precise lines if required, as well as grinding and shaping. The top face of the wheel also has blades, so this can be used in a fully vertical position to neaten up the inside of bezels. There are really no rules with this type of burr.

Burrs are designed to perform a function at speed, and ultimately make life much easier for the jeweller. Hopefully our guide has now armed you with enough basic information to encourage you to dive in and try out some of these great little tools for yourselves.

DoMultiRec can also improve hole bottom flatness. Thanks to the optimized insert arrangement on the cutter, hole bottoms can be drilled slightly conical (almost flat) with a peak no higher than one-tenth of the cone formed by conventional plunge milling tools. This design eliminates concerns of hole bottom flatness when helically interpolating holes no more than 2 mm larger than the tool diameter.