Did You Know The "Rattling Sound" From Your TS-Series Saw Means It's Working, Not Broken?
The "strange noise", often described as a rattling sound, is caused by the MMC electronics in the tachometer regulated speed control sending power to the motor in a stream of various sized bits.The motor is constantly being turned on and off to keep the saw blade rotating at a constant speed.
Most of the sound is being produced by "gear backlash" between the small pinion gear on the rotor and the larger gear that drives the saw blade. The saw blade behaves like a flywheel and has inertia that keeps it rotating while the small gear has slowed down. The opposite sides of the gear teeth tap against the mating teeth of the large gear and the vibration conducts to the saw blade, where it becomes sound which radiates from the blade like a speaker. Some of the noise is created by the field coil wires and plates vibrating from the pulsing magnetism as they energize and de-energize. These pulses get longer and longer as the saw is put under load.If the machine is run without a blade installed, there are no unusual sounds. In this case, the pulses are short, but there is no inertial resistance from the blade flywheel.
The "strange noises" heard from a Festool circular saw are normal... I would be more concerned about a saw that did not make these noises. It might be an indication that it's speed control is malfunctioning. The Festool saw is unique. If other manufacturers used similar Pulse width modulation speed control in their saws, customers would come to expect such "strange noises", and they would not be so strange. The noises would be the "familiar Festool sound".
Faster. Easier. Smarter.
In 1951, Festool introduced the world’s first handheld orbital sander which shaved hours off of an otherwise tedious job.
In 1976, Festool develops the first random orbital sander to market maturity.
In 1984, the dual-mode Rotex RO 150 E for outstanding surface results with a single tool, from rough sanding to fine finishing - the first sander of its type.
View Marc's video about how Festool help his "one man shop" work Faster, Easier, Smarter.
My name is Marc Spagnuolo, and I am The Wood Whisperer. That still sounds funny to me when I say it! Truthfully, TheWoodWhisperer.com started as a little side project and a means of educating my fellow woodworkers in my spare time. Running a one-man custom furniture shop doesn't usually allow for much fun time. But it didn't take long before my wife and I realized we created a monster. Apparently our timing was very good. There isn't much in the way of quality woodworking programming on the television these days, and our site offers a unique, one-of-a-kind look into the workings of a real shop. Bringing some comedy and my wife into the show have been the icing on the cake. In fact, my wife probably has more fans than I do! But this unexpected mix of fun, family, and quality fine woodworking tips seems to appeal to a wide range of viewers. The site and the show are really just extensions of my life. And with a live webcam in my shop at all times, my life is becoming a completely open book. Or would that be an open tool box?
The Festool C12 is the lightest 12V drill on the market and the first cordless drill with a brushless motor. Lift a pound less each time you drill or drive without sacrificing any power. That's 200 fewer pounds over the course of a typical day. As for longevity, the C12 will drive up to one million screws before it needs to be replaced. Based on the revolutionary EC-TEC® motor technology, the C12 incorporates a clever arrangement of motor, transmission, and battery, allowing an extremely short design: the C12 never needs more than 6" space.
Special thanks to John Lucas, an avid cabinetmaking and Festool loyalist, for contributing this month's Festool "Toolie Tip". John says...
I remember when I first started woodworking in the 60's and I was using my father's radial arm saw, I could get the first 3 corners of a frame to fit perfectly, but not the 4th. The final corner just wouldn't come together without excessive clamping. I think every woodworker has gone through this exercise at some time.
by David McGibbon, Festool Service Technician
Swirl marks can be caused by...
Little groups of loose grit particles get imbedded onto some areas of the sandpaper. They can then make scratches that show up in the stained finish as darker lines where a denser layer of stain can accumulate. This is common with cheaper grades of sandpaper. Or, where larger grit particles from previous passes with heavier grit papers have left larger loose bits of abrasive.
For the best results, the worked surfaces should be dusted off between changes to finer grit abrasives… and use good quality paper.
There are many reasons why more and more customers would rather invest in a high quality tool than "throw away" models. One of those reasons is directly related to the availability of consumables and spare parts.
Here is a question we often get from customers; "If a tool that I bought a while ago gets discontinued, do I have to worry that I won't be able to buy consumables and spare parts for that tool anymore?" The answer is "no". Festool guarantees the availability of consumables and spare parts for at least 7 years after a tool is discontinued. We say "at least" because for almost every tool we have discontinued in the last 20 years, there are still spare parts and consumables available. Festool tools last very long under normal conditions. Believe it or not, we sometimes get tools back for repair that were sold in the 1950s and have been in use since then! In most cases we still manage to find the right parts for these tools.
So the next time you make a tool purchase, choose to invest in a Festool product that is designed for durability and for which consumables and spare parts will be available for decades to come.
Faster. Easier. Smarter.