What is the Tersa™ Planer Knives System?
The Tersa™ system has been patented in 1984 in Switzerland. The system consists of the Tersa™ cutter head and the Tersa™ Planer Knives.
HSS Tersa™ Planer Knives are made of High Speed Steel; which is superior to the older carbon steel; it can endure much higher temperatures. This feature allows HSS to cut faster than the carbon knives, which has been a tremendous asset to the wood industry.
Because of their high quality, Tersa™ Planer Knives give your product an exceptional finish.
What wood can Tersa™ Knives be used on?
The HSS knife has an angle of 40°, ideal for soft woods such as cedar, pine, fir, etc. The M+Tersa™ planer knife has an angel of 55°which makes it more durable, used on hardwood like maple, birch, oak and cherry wood. Tersa™ Planer Knives don’t need to be sharpened, the blades are two sided and can be recycled after use.
What lengths of Tersa™ Knives are available?
Tersa™ Planer Knives are cut to order, thus they are availible in any and all lengths. No need to use a long, more expensive planer knife on a job that could be done with a shorter knife size, thanks to the easy Tersa™ changing system.
How do I know I'm getting the real Tersa™ Planer Knives and not an imitation?
There are many inferior imitations available on the market.
Original Tersa™ Planer Knives have the name etched on the blade, as well as HSS, M+, MD (carbide) or CR (Chrome Steel) depending on the knife type, and are packaged in a distinctive cardboard sleeve.
How long do the Tersa™ Knives take to change?
You can change Tersa™ Knives within minutes.
Do I need to change screws or adjust Tersa™ Knives?
The Tersa™ systems brilliant design leaves no screws to deal with. A consistent cutter head diameter and knife height eliminates the need for adjustment. For more on changing blades please see the below tutorial.
How Do I Change Tersa™ Planer Knives?
Step #1: The first step is always to either unplug the machine or perform a so called “lock out”. Depending on machine brand, the Tersa™ Planer Knives can either be changed with the Tersa™ cutter head in place or the head has to be removed from the machine.
Step #2: Using the Polyvalent Tersa™ Key (or a wooden wedge) and a hammer, release the wedges so that the Tersa™ Planer Knife can be safely removed by sliding it out sideways from the knife slot. At this point, it is a good idea to clean the cutter head, by blowing out the sawdust and removing the pitch.
Step #3: The Tersa™ Planer Knife can now be slid back in the slot, either using the second side of the knife or replacing it with a new one, making sure it is all the way in.
With all parts back in place and after double checking to make sure everything is secure; the power can be turned back on. Each cutter head needs to be run separately for a short time. The Tersa™ Planer Knives are clamped in place by centrifugal force.
*Disclaimer: change blades at your own risk. We are not responsible if any accidents happen based on this tutorial, it is only meant as a guide. Ensure you adhere to the instructions in your user manual before changing your blades.