Are collet extenders no longer required?
Please study the photo of a MUSCLECHUCK and you will realize that less than one half inch of the chuck actually locks the bit securely. Now bear in mind that we already obtain at least an extra 1/2" depth of cut, now supposing that you use a quality bit that should have little or no run-out, then we can add a great deal more length to the bit. Whilst this may not give quite as much extra depth of cut as a collet extension it will be sufficient for all the many deep routed projects that I have made over the years and because of the lower mass will give a quieter and better finish than an extension.
I bought the CMT extender in about 2001, it cost about $90.00, far more than others that were available but I have never been happy with the amount of vibration. So, will extenders now become obsolete?
Nothing but heaven itself is better than a friend who is really a friend. - Plautus