CNC routers need bits. They determine the kind of processing you can do, the resolution of your finished designs, and how fast you can move through the material. They come with cutting edges that pull up or push down (sometimes both), they have square or shaped ends, they are made for speed or accuracy, and they come in diameters from a pinpoint to over two inches for standard CNC routing.

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While compression bits are the tool of choice for cutting double side laminates, it’s essential you use the tool correctly.

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The cutting edge of most tools are on the side of the tool, therefore a direct plunge into the material will be fine for your standard upwards tool as the waste material is lifted out of the cut line and into the extraction system.

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By combining both geometries, you achieve a win/win situation. The bottom of the material is pulled upwards while the top of the material is pushed downwards thus eliminating the risk of damaging the laminated surfaces. When run at full depth, the bit leaves a sharp, clean edge on both sides of your workpiece.

Compression bits are used extensively for cutting double side laminates such as melamine or plywood. These tools can also be used on natural woods where edge finishing is a problem with standard spiral tools.

Great in Heavy Radial Efficiency Milling (HREM) applications of Titanium 6Al4V and other titanium alloys, these fully stocked, square profile Variable Helix End Mills decrease chatter and harmonics.

However, for downward spirals and/or compression tools, it is best to ramp into the material. This approach stops the swarf from compressing at the bottom of the tool and causing extreme levels of heat. This heat will damage the cutting edge of the tool and the work piece.

Harvey Tool is committed to designing unique geometries that optimize cutting performance for a variety of materials and applications. We introduce hundreds of new tools to the market every 6 months, offering our customers the solutions they need most.

A compression bit can be a little more expensive than standard router bits, however here at AXYZ we recommend them as an essential tool when processing double laminate wood materials.

We offer a comprehensive selection of more than 28,000 miniature and specialty cutting tools that are all fully stocked. The breadth and depth of our products help solve the industry’s toughest machining challenges.

A compression bit is the combination of both upcut and downcut spirals. Typically, a compression spiral has an upcut single, double or triple flute at the tip of the cutter, approximately one third of the cutting length. The remaining two thirds is ground to give a downcutting shear.

Author: Abdullah Umair is an application specialist for AXYZ, a global manufacturer of CNC router and knife systems. Abdullah has covered many areas during his spell at AXYZ to ensure he has gained holistic exposure to both the needs of customers and the functionality of the machine.

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Our fully stocked inventory is ready to ship the day of its purchase. We offer second day delivery at ground pricing, and any overnight orders ship until 7 p.m., EST.

Great in Heavy Radial Efficiency Milling (HREM) applications of Titanium 6Al4V and other titanium alloys, these fully stocked, square profile Variable Helix End Mills decrease chatter and harmonics.

New to Harvey Tool, Machining Advisor Pro (MAP) is a cutting edge resource for generating customized running parameters for Harvey Tool end mills.

We offer a comprehensive selection of more than 28,000 miniature and specialty cutting tools that are all fully stocked. The breadth and depth of our products help solve the industry’s toughest machining challenges.

Add products to your Harveytool.com shopping cart and then submit the cart to a participating distributor to place your order

A dedicated up or downward spiral may only give a good finish on one side of the material if the material is laminated. Where both sides of the material require the best possible finish, a compression bit is your best solution.