The Continuing Evolution of Diamond (PCD) Cutting Tools

surface and panelAs published in Q2 2014 issue of “Surface and Panel” magazine:

The Continuing Evolution of Diamond (PCD) Cutting Tools:

In the summer of 1982, when the International Woodworking Fair (IWF) made its debut show in Atlanta, GA, the first polycrystalline diamond tools for wood/composite material were introduced in the U.S. The promise they brought ….to run up to one million feet of material without a single tool change, seemed inconceivable and no one could fathom that any cutting tool could continuously run the equivalent of 7+ marathons (over 180 miles) cutting abrasive particleboard without wearing out on the first 10 miles!

High-tech panel production equipment coupled with competition among cutting tool manufacturers has earned a handsome dividend for panel processorsgiga cutter, allowing manufacturing costs to stabilize. As diamond tooling evolves, developments include extreme axial shear angle cutters that achieve a satin smooth finish resulting from a cutting action that is closer to shaving or peeling, rather than cutting. While these cutters are ideal for peripheral cuts, they aren’t the solution for parting cuts due to the larger cutting diameter necessitated by the extreme axial shear and resulting yield inefficiencies.

Hogging/panel sizing cutters continue to advance with interesting designs that incorporate dust flow and chip extraction features along with lighter overall tool weight (to reduce injury risk during tool changes) and tooth geometries that are matched to specific application for best finish.

The continuing advancement of newer composite panel materials, whether lightweight honeycomb panels with aluminum skin, wood composite panels with highly abrasive laminate surface, fire rated MDF, carbon fiber reinforced plastics, phenolics or other PCD Hoggerspecialty materials, each seem to present their own set of unique challenges to efficiently cut, profile and optimize tool life while obtaining a quality surface finish. These challenges keep design and implementation of new cutting tool engineering ideas at the forefront and this trend will continue.

Diamond-tipped saw blades deliver great savings during the many months they run without garnering even a moment of attention until they become dull! PCD saw blades do best and perform the longest in homogeneous materials, such as solid surface material, wallboard, hardboard, cement fiber board, MDF and similar materials.

FourcutDiamond router bits have progressed as well. Chip load is the most important factor in seeing positive performance, so, the once popular disposable diamond router bit, that has definite feed speed limitations, has taken back seat to newer designs. It is important to review expectations for output, finish and performance when determining the tool specifications. The choice of single, two or three flute, straight or shear, segmented, staggered, insert or solid PCD tip, diamond grade (coarse or fine), polished or not should all play a part in the decision for best results.

Drill bitsPCD2V, both through-hole (V-Point) and dowel style, are another relative newcomer in the array of diamond tools offered. While they do not run the marathons that their hogger, saw blade and routing counterparts are known for, they still offer a stately price/performance ratio that should not be underestimated or overlooked.

To summarize, panel processors not using diamond tooling in their production, are overlooking a tremendous opportunity to improve their bottom line! Letting the initial cost of diamond tooling intimidate…is ignoring the fact that in most cases, PCD provides the lowest cost per linear foot machined!

Written by Karin Deutschler, President of GUHDO USA Inc. Karin has been selling diamond tooling since its introduction in the U.S. in 1982.

 GUHDO now offer select precision tooling online or you can also check out our full catalog here!

Saw Blade Clamping adapters for CNC machines


HS63F saw blade adapter for CNC

GUHDO offers several clamping systems for mounting saw blades for use on CNC routers. Option one is a one-piece, integrated flange for mounting large diameter saw blades up to 400 mm (16”). The clamping flange offers an HSK63F machine connection with a flange to accept 30 mm bore saw blades. The saw blade is mounted to the flange with 8 countersunk screws. For added stability, a counter flange is available together with 8 socket head screws. This flange system offers two, “A” gauge length options of 40 or 50 mm. (Item# 39498)


longer reach CNC saw blade arbor adapter by GUHDO

Option two offers greater flexibility in terms of machine connection and increased “A” dimension for greater reach. A two-piece system that offers a saw blade flange and intermediate rings or spacers mounted on an arbor. The precision saw blade flange is designed to accept saw blade diameters up to 350 mm (14”) with a 60 mm bore and is secured with 6 countersink screws. This attachment with the countersink screws allows the saw blade to run with in close proximity to the machine bed. Depending on the “A” length desired, there are three intermediate rings or spacers available to achieve the desired overall reach. With the corresponding spacers, this allows for an “A” dimension of 100, 115, 140 or 176 mm. The greater length is ideal for machining thicker material or specialty applications commonly found in the millwork and door and window industries. Depending on the machine and motor connection, arbors are available with HSK63F, HSK63E, ISO30 and SK30 connections. Once assemble, the entire unit offers precision machining of a variety of applications and materials. Depending on the application, a variety of standard saw blades complete with the required bore and pinholes are readily available and custom blade setups are also possible.


shank-style CNC adapter for saw blade use

In addition, as a third option, there is a basic saw blade arbor adapter that has a 3/4″ or 25mm shank, which can accept saw blades up to 200mm diameter. And, of course, when the saw blade needs to run vertically, you will need an aggregate head.


For information on these products or related items such as T-slotting, Lamello grooving or similar applications, contact GUHDO for solutions! To understand more about our capabilities and how we may be a good fit to partner with on tooling needs, learn more at

Custom Saw Arbor Example


custom saw arbor set up using spacers for precise cut

Need special tooling set-ups? Let GUHDO help! The saw blade setup above was made for a customer using the bottom station on a moulder to rip 2×8 hardwood with special saw blades mounted on the sleeve it guarantees exact distance dimensioning. While most people know we have the ability to sharpen PCD diamond tooling, we also have the machines and expertise in house to do modifications, such as boring a 5/8″ blade to 1″.

For specs on the arbors available please click here.