Taking the Guesswork out of Saw Blades – Selecting the Right Blade

GUHDO precision saw blades

GUHDO precision saw blades

 

We are happy to announce this article was featured in Cabinetmaker FDM in Nov ’14. Here is the original text in its entirety.

With the plethora of saw blades available in the market today, it can be daunting for the user to choose the right blade for the right application.  Since Chinese-made blades have heavily infiltrated the wood products industry with low prices in recent years, it has become even more difficult to determine which blade is right.  Low pricing can be very tempting!    Visually, blades can be hard to differentiate since all are circular, they all have a hole in the center, and they all have teeth around the circumference – that’s about where the similarities end.

What makes a saw blade a precision blade? it begins with the saw plate, i.e. the body.  The larger the diameter of the saw blade, the more important the plate quality is.   The tensioning of the saw body, which keeps it flat and running true is paramount to achieving a good finish and maintaining cut quality for the life of the saw blade.  Once the plate is warped or “dished”, the chances of correcting the tension successfully diminish and (more…)

National “Get Woodworking Week!”

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It’s National Get Woodworking Week!

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Woodworking is a hobby and/or profession that is fun and interesting. It not only challenges creative skills but also analytical skills. On top of that, it also leaves one with a feeling of satisfaction upon finishing a project and being able to see a completed product.

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Get Woodworking Week started as an idea by Tom from Tom’s Workbench. In order to preserve traditional woodworking and to make sure the craft of woodworking doesn’t get lost over time, he and a few other passionate woodworkers decided to initiate National Get Woodworking week.

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Considering that the trend in the furniture industry seems to develop away from pieces that are build to last and more towards pieces out of MDF or particle board, his efforts are commendable.

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Upon realizing that woodworking isn’t taught in schools nearly as frequently anymore as it used to, Tom and his fellow woodworking friends decided that it was time to start National Get Woodworking week in order to inspire those new to woodworking to get more involved, inspired and motivated.

For more information visit guhdo.com

Disposable Inserts Help Reduce Machine Downtime

Custom Profile Insert Cutter

Custom Profile Insert Cutter

Disposable inserts can reduce grinding costs and minimize machining downtime. The evolution of cutting tools has progressed from being quite labor-intense to heavily relying on machines and automated processes. With these efficiencies, it is now more important than ever to keep down set-up times and adjustment times in order to minimize tooling related costs.

The introduction of CNC machines (vertical CNC routers, automated panel processing systems) over the last +20 years have made a massive impact on the millwork and woodworking industries as well as many others.  One of the problems with the structural shift to CNC machines was that all traditional tools, like carbide tipped cutters, change dimensions after being sharpened. Router bits, drill bits, and boring bits become shorter, and shaper cutters lose diameter and profile detail. With the development of CNC machines, the industry was in need for precise cutting tools that wouldn’t change dimensions once they had to be sharpened.  This demand became first apparent in Europe, leading to the development of disposable insert knives made of solid tungsten carbide. The knives were developed to provide constant diameter at a lower cost to complement CNC machines.

Profile Insert Cutter

Custom Profile Insert Cutter

The main advantage initially in this type of tooling lies in the fact that the knives are made of tungsten carbide alloy. Tungsten carbide tooling is harder than most other brazed-up type cutters providing a longer tool life as well as a constant cutting diameter.  Insert knives are CNC compatible and with the ability to quickly replace them, they reduce machine downtime.

Another advantage lies in the insert clamping devices and wedges. The holding devices are designed to conform to multiple performance parameters that deal primarily with the workload placed on them and the applicable safety characteristics. As fail-proof as possible, the clamping devices are designed in a way that the wedges are inverted, leading to centrifugal force tightening. Additionally, the wedges also serve as chip removal gullets and chip breakers.

Insert Jointing Cutter

Insert Jointing Cutter

The workload capacity of disposable insert tools is generally less than that of traditional massive cutters tipped with either high-speed steel or tungsten carbide. The difference, though, is neglectable since the achievable feed rates for most applications are still more than sufficient. A jointing cut feed rate of 15 feet per minute, for example, is easily reached and should be adequate for most situations. 

Insert Close Up

Insert Close Up

 

Please contact us for more information on how inserts can reduce your tooling related downtime.

Diamond vs. Carbide Tooling Cost Comparison

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Diamond Router Bits

It is well-known that Polycrystalline Diamond (PCD) tooling delivers high performances in cutting applications while also significantly while reducing a company’s overall tooling costs.  Under the right conditions and with the proper maintenance, great cost savings can be achieved. The first tool life can yield savings of up to 30 -50% in comparison to carbide tools or inserts. And subsequent sharpenings will further increase the savings when compared to a carbide tool or insert.

Solid Carbide Compression Router Bit in HSK 63 F Tool Holder

Solid Carbide Compression Router Bit in HSK 63 F Tool Holder

To illustrate the cost savings we have created the example cost comparison below:

The Formula: 

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The Data:

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The Example Cost Comparison (per Linear Foot Machined):

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The calculation quite accurately illustrates, that although at first look Diamond tools seem to be a costly investment, it is an investment that pays off rather quickly and costs only a fifth of what equivalent Carbide tools would cost.

It may not be necessary to buy Diamond Tools for everyone and every company, but especially those who need their tools to last as long as possible and would like to get as much use out of them as possible, will find that investing in diamond tools is more than cost-effective.  The best applications for diamond tools are those machining  abrasive materials and doing high volume of the same cut. We are now offering select tooling online.